Journal articles: 'Air - Temperature - Numerical Simulation'

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Asghar, Usama, Muzaffar Ali, Danyal Iqbal, Muhammad Ali, and Muhammad Hassan Ameer. "Numerical Analysis of dew point Indirect Evaporative Cooler." MATEC Web of Conferences 381 (2023): 01007. http://dx.doi.org/10.1051/matecconf/202338101007.

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An indirect evaporative cooler that uses a Maisotsenko (M) Cycle has the potential to be a green and sustainable solution for managing a building’s cooling demand since it can attain sub-wet bulb temperature without humidification. This study presents the design and simulation analysis of a crossflow indirect evaporative cooler using the COMSOL Multiphysics software for various ambient conditions. The cooler’s performance was evaluated by varying the inlet air temperatures. The analysis was conducted using numerical simulations, and the outcomes were compared with experimental data. The simulation results demonstrated that the cooler could achieve significant temperature reductions at a minor energy consumption as compared to traditional air conditioning systems. This study delivers that this system reduces the temperature of inlet air up to 22°C as well as cooling capacity and coefficient of performance values are 3.699 kW and 27.40. Overall, the results demonstrate the potential of crossflow indirect evaporative coolers as an energy-efficient alternative to conventional air conditioning systems.

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Lam Wai Kit, Hassan Mohamed, Ng Yee Luon, and Leon Chan. "Numerical Simulation of Ventilation in a Confined Space." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 107, no. 1 (July 31, 2023): 1–18. http://dx.doi.org/10.37934/arfmts.107.1.118.

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Numerical simulation of ventilation in a confined space is conducted with different quantities of heat sources and various conditions of the room with a constant ambient temperature of 298K. The velocity streamline plot shows a different air recirculating pattern in the case with the air ventilation system switched off. The room with an extreme condition achieves the highest temperature of T=310K. The lowest temperature is obtained in the case with a relaxing condition where T=Tac=294K. The efficiency of systems reduces when the air conditioner and air ventilation system operate at the same time. The efficiency of the air conditioner increases, and the ambient temperature achieves minimum value when the air ventilation system remains off. The position of the air conditioner is closed to the air ventilation system causing the efficiency of the system to reduce. This is due to the air ventilation system drawing cold air out of the room before convective heat transfer occurs.

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Zhao, Xiu Guo, Xin Xi Xu, Chen Su, Fu Niu, Shu Lin Tan, Jun Shu Han, Xu Dong Ren, Wen Chang Zhang, and Zhen Hai Gao. "Numerical Simulation of Microenvironment Inside Mobile Operating Room." Advanced Materials Research 1030-1032 (September 2014): 819–22. http://dx.doi.org/10.4028/www.scientific.net/amr.1030-1032.819.

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The computational fluid dynamics (CFD) is used to design the position of the inlet and outlet of the air conditioning and analyzing the air flow field and temperature distribution inside the operating room .The result showed the purification air conditioning of the mobile operating room can make air flow along only single direction with effectively avoiding the contamination gathering in the surgical area. It also can improve air cleanness of surgical area and fight against the infection of the patient wound. In the surgical area, the temperature is distributed around 23°C with perfect temperature distribution without obviously temperature gradient.

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Zhong, Xiao Hui, Yu Ling Zhai, and Yun Jun Gou. "Numerical Simulation of Small Cold Storage." Applied Mechanics and Materials 50-51 (February 2011): 896–900. http://dx.doi.org/10.4028/www.scientific.net/amm.50-51.896.

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The airflow change in cold storage were simulated by FLUENT under following three conditions, pre-cooling, stop to defrost and switch cold storage door. The result shows that the pre-cooling wind speed should be chose reasonably while guarantees the pre-cooling effort, hot air defrost had a favorable defrosting performance, and it is essential to seek optimal defrosting time according to the frost thickness and energy consume. The temperature field near the switch door was analyzed, and the temperature gradient near the switch door is considerable, but the outdoor air can be obstructed by increase air curtain.

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Zhang, Shi Cheng, Zhen Yang, and Li Yang. "Numerical Simulation of Sea Surface Transient Temperature Field." Advanced Materials Research 482-484 (February 2012): 497–500. http://dx.doi.org/10.4028/www.scientific.net/amr.482-484.497.

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Sea surface temperature (SST) is a prerequisite for sea surface infrared imaging simulation. A temperature model suitable for seawater heat exchange is proposed based on the heat balance of air-sea interface and equations of fluid heat exchange. The model considers the air-sea heat transfer characteristics and influences of penetrating solar radiation in seawater. Effects of the solar radiation, sea surface wind speed and air temperature on SST are analyzed. Temperature model is also used to simulate the SST diurnal variation and compared with the measured values to verify the validity of the model. The results show that the model is useful for solution of sea surface transient temperature field and provides the basis for infrared imaging simulation of sea surface.

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Chyen, P. C., C. S. Yang, I. L. Wang, and H. H. Hwung. "NUMERICAL SIMULATION ON THERMAL DIFFUSION CONCERNING AIR-SEA HEAT EXCHANGE EFFECTS." Coastal Engineering Proceedings 1, no. 20 (January 29, 1986): 183. http://dx.doi.org/10.9753/icce.v20.183.

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The numerical simulations on thermal diffusion always concentrated upon the raised temperature and temperature distributions after the heated water discharged from outlet into surrounding water, and the surrounding water temperature was assumed to be a constant. Actually, the water temperature on surface layer in shallow water area varies several centigrade degrees depended upon the weather conditions during a whole day. In order to obtain the absolute water temperature prepared for the ecological changes assessment and even provided for the operation basis of the cooling water system that air-sea heat exchange has to be considered in the numerical simulation of thermal discharges. For the practical application of this numerical simulation, the first nuclear power plant in Taiwan was taken as an example and simulated in this paper. And the results were presented in figures.

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Tokairin, T., H. Kondo, H. Yoshikado, Y. Genchi, T. Ihara, Y. Kikegawa, Y. Hirano, and K. Asahi. "Measurement and Numerical Simulation of Air-Temperature in Tokyo." Proceedings of the Symposium on Global Environment 13 (2005): 129–34. http://dx.doi.org/10.2208/proge.13.129.

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Lindemann, Joerg, Tilman Keck, Kerstin Wiesmiller, Bjoern Sander, Hans-Juergen Brambs, Gerhard Rettinger, and Daniela Pless. "A Numerical Simulation of Intranasal Air Temperature During Inspiration." Laryngoscope 114, no. 6 (June 2004): 1037–41. http://dx.doi.org/10.1097/00005537-200406000-00015.

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Yang, Wei-hong, Shao-jiang Jiang, Tse-chiang Hsiao, and Li-xing Yang. "Numerical simulation of high temperature air combustion flames properties." Journal of Central South University of Technology 7, no. 3 (September 2000): 156–58. http://dx.doi.org/10.1007/s11771-000-0027-7.

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Raczkowski, Andrzej, Zbigniew Suchorab, and Przemysław Brzyski. "Computational fluid dynamics simulation of thermal comfort in naturally ventilated room." MATEC Web of Conferences 252 (2019): 04007. http://dx.doi.org/10.1051/matecconf/201925204007.

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The paper presents experimental measurements and numerical simulation of thermal environment in naturally ventilated room by a fresh air valve. For the aim of Computer Fluid Dynamics (CFD) simulations, a model room was created. The fresh air valve is located in an occupied space, at the external wall. It has a major effect on mixing indoor and outdoor air, temperature profiles, thermal condition and indoor air quality of the rooms during the heating period. To determine the thermal condition of a naturally ventilated building, PN-EN 15251:2012 standard was used. According to the standard, using PMV/PPD is suitable for evaluating the thermal environment. In the naturally ventilated buildings, the following criteria are very important for local thermal discomfort: draught, radiant temperature asymmetry and vertical air temperature differences. To compare the simulation results, real air temperatures were measured by the thermocouples in a day room having the same geometry. A series of simulations has been carried out to determine the profiles of temperature and velocity of indoor air. Obtained results prove correlation with calculations of profiles of indoor air temperature, estimated using the thermocouples.

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Mustafa, Mustafa T., and Ayad T. Mustafa. "Numerical Simulation of Thermal-Hydrodynamic Behavior within Solar Air Collector." Journal of Engineering 24, no. 3 (March 1, 2018): 29. http://dx.doi.org/10.31026/j.eng.2018.03.03.

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Solar collectors, in general, are utilized to convert the solar energy into heat energy, where it is employed to generate electricity. The non-concentrating solar collector with a circular shape was adopted in the present study. Ambient air is heated under a translucent roof where buoyant air is drawn from outside periphery towards the collector center (tower base). The present study is aimed to predict and visualize the thermal-hydrodynamic behavior for airflow under inclined roof of the solar air collector, SAC. Three-dimensional of the SAC model using the re-normalization group, RNG, k−ε turbulence viscus model is simulated. The simulation was carried out by using ANSYS-FLUENT 14.5. The simulation results demonstrated that at same insolation; airflow, ground and air temperatures increase when the collector radius decreases towards the collector center. The ground temperature and air velocity increase, while airflow temperature decreases when the inclination angle increases from 0° to 20° due to changing in airflow movement. More decreasing in airflow temperature has been occurred when the inlet height increases from 0.1m to 0.25m. The simulation results were validated by comparing with the experimental data. In conclusions, the obtained results showed the capability of producing warm airflow to generate electricity in Baghdad city.

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Feng, Guang Hong, Hong Liang Zhang, and Jian Wen Fan. "Numerical Simulation of Controlled Rolling of Thick Slab." Applied Mechanics and Materials 487 (January 2014): 522–26. http://dx.doi.org/10.4028/www.scientific.net/amm.487.522.

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The numerical simulation method was adopted to study the single-pass controlled rolling deformation process of the 400mm thick slab .Two forms of the rolling deformation which are uniform temperature rolling and rolling of temperature waiting under air cooling have been used to simulate the center strain changes of the thick slab. It was shown that: increasing the deformation of single-pass can significantly increase center strain of the thick slab; temperature waiting under air cooling can lead to a large temperature range between surface and center, which can increase center strain of thick slab during subsequent rolling.

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13

Wang, Zi Fang, Jian Li Liu, Lian Sheng Liu, Ye Bin Yin, Jin Xiang Wu, En Yu Wang, and Xiang Gou. "Numerical Simulation Research on the Heating Process of Air by Waste Heat." Applied Mechanics and Materials 694 (November 2014): 260–65. http://dx.doi.org/10.4028/www.scientific.net/amm.694.260.

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Flue gas of boiler is a kind of great potential waste heat resource. Relatively high temperature of exhaust has caused a vast waste of energy and serious environmental thermal pollutions. To make a full and reasonable use of the heat resource, a simplified single-tube heat exchanger is introduced in this paper. Dry air and wet air with different temperatures transfer heat with flue gas in the same model. And the results show that heat near the inner wall exchanges more violently than any other space in the heater. For dry air, the higher temperature of the air enters into the heater, the lower heat transfer effect of the heater. Heat exchange effect of the wet air with 0.03 mole fraction of water is more higher than that of dry air in this model.

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Xu, Shu Hui, Hai Guang Dong, and Wen Fang Li. "Numerical Study on Temperature Distribution of Classroom with Hybrid Ventilation." Key Engineering Materials 480-481 (June 2011): 1587–92. http://dx.doi.org/10.4028/www.scientific.net/kem.480-481.1587.

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Air quality is very important for classrooms where high density of students study for long time. Enhanced ventilation is an idea way to introduce more fresh air to classroom. Hybrid ventilation combined natural ventilation with mechanical ventilation is a economic way for ventilation improvement. factors Influencing hybrid ventilation such as heat source intensity, location of air inlet, air velocity were studied by simulation in this paper. The characteristics of temperature distribution of the classroom were also analyzed. The simulation research was validated by model experiments. A low position of air inlet in the room makes high temperature efficiency, the optimal value of the air inlet velocity is about 0.5 m/s.

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Qiu, Xiao Zhi, Yan Ming Zhao, Bao Hua Huang, and Wei Xu. "Numerical Simulation on the Temperature Characteristics of Indirect Air Cooling System." Applied Mechanics and Materials 741 (March 2015): 536–40. http://dx.doi.org/10.4028/www.scientific.net/amm.741.536.

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Based on the analysis of indirect air cooling system, a numerical simulation model of indirect air cooling system was constructed by ANSYS software. According to the different wind speed condition, the temperature characteristic of indirect air cooling system was analyzed. The simulation results show that with the increase of wind speed, the ventilation and heat release of the indirect air cooling system change greatly. It provides a theoretical basis for the design of the wind-proof device of indirect air cooling system.

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Maran, P., S. Boopathi, P. Gowtham, and S. Chidambaram. "Prediction of Lean Blowout Limits for Methane-Air Bluff Body Stabilized Combustion using a Temperature Gradient Method in a Model Gas-Turbine Afterburner." International Journal of Turbo & Jet-Engines 37, no. 4 (November 18, 2020): 343–52. http://dx.doi.org/10.1515/tjj-2017-0028.

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AbstractIn the present work, LBO limits for methane-air combustion stabilized by a V-Gutter have been predicted by a hybrid method using numerical simulation and empirical relations. The numerical simulations have been carried out to study the stable methane-air combustion and temperature gradients at exit and recirculation region in a model gas turbine afterburner with a planar V-Gutter as a bluff body for four inlet air pressure conditions and three V-Gutter angles. The calculated average exit gas temperature (AEGT) and the average gas temperature in recirculation region have been used for predicting the blowout conditions. An empirical method based on Feature Section Criterion has been used to determine Fuel-Air Ratio (FAR) at blowout conditions very accurately from the numerically calculated average temperature in the central recirculation zone (CRZ).The predicted Fuel-Air Ratio (FAR) at lean blowout conditions has been compared with the experimental results obtained for the same conditions and are found to be in good agreement.

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Du, Ze Hang, Chun Hua Liu, and Guang Zhou. "Numerical Simulation and Optimization of Air Distribution in Large Space." Advanced Materials Research 1070-1072 (December 2014): 2021–26. http://dx.doi.org/10.4028/www.scientific.net/amr.1070-1072.2021.

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In recent years, people pay increasing attention to the issue whether indoor air conditioning system can meet the requirements of thermal comfort under the circumstance of good air quality and reduce energy consumption. FLUENT, commercial computational fluid dynamics software is used to simulate the three-dimensional distribution of temperature and velocity in the subject hotel atrium. The turbulence model modified by buoyancy was used to solve equations. The SIMPLE scheme was used for numerical discrimination. Distribution of temperature, velocity on some typical section and the atrium space can be obtained; the result of numerical simulation can be visualized by post-processing module of FLUENT and TECPLOT software. The influence to the air flow distribution is simulated and calculated by the elements of different rates, angle, and height of the air supply flow. As for the specified case of the project, an optimized solution is obtained, that is supply air speed 6 m/s, angle 15°, air inlet height 7.5m, air temperature 291K.

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Zhao, Fu, Ping Wang, Yan Jue Gong, Yu De Liu, and Hong Bin Xin. "Airflow Simulation of the Huge Telescope Assemble." Key Engineering Materials 439-440 (June 2010): 880–83. http://dx.doi.org/10.4028/www.scientific.net/kem.439-440.880.

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With the three-dimensional computational fluid dynamics method, the airflow effects over the huge telescope assemble is investigated in this article. The distributing of velocity field and natural convection are studied by modeling and simulating the turbulent airflow of the huge telescope. Numerical simulations show the best observation direction is the 90o angle between the main optics axis and the horizontal line in which the air velocity distribution is the least. And the air temperature distribution and uniformity around the telescope are also provided by simulation.

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Du, Tao, Li Sheng Ji, and Guang Yi Gao. "Numerical Simulation of Furnace Combustion Characteristic in HTAC." Applied Mechanics and Materials 84-85 (August 2011): 274–78. http://dx.doi.org/10.4028/www.scientific.net/amm.84-85.274.

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In this thesis, in the double preheating system of air and gas, the high temperature air combustion process of low calorific value gas, in which the FLUENT software is used as the calculating tool and furnace model as the object, is numerically simulated by use of the k-ε turbulent two-way model, the PDF combustion model, discrete-ordinates-method radiative heat transfer model and the modified NOX -generation thermal model. Get the flow field, temperature field and concentration field inside the furnace in different times.

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Wan, Ming Wei, and Suo Huai Zhang. "Numerical Simulation of the Tunnel Oven with Fluent Software." Advanced Materials Research 399-401 (November 2011): 1856–61. http://dx.doi.org/10.4028/www.scientific.net/amr.399-401.1856.

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After the model of sterilization area was established, numerical simulate was completed with fluent software. Verified with certain conditions of hot air velocity, the laminar flow tunnel oven is able to meet the relevant requirements of GMP. Under different speeds of hot air, the tunnel oven vials’ relationship between temperature and time, combined with analysis of pressure distribution inside the oven. When the air speed range from 0.6m/s to 1.5m/s, the temperature of vials meet the requirements and the minimum effect of negative pressure to oven.

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Sommer, F., R. Kroger, and J. Lindemann. "Numerical simulation of humidification and heating during inspiration within an adult nose." Rhinology journal 50, no. 2 (June 1, 2012): 157–64. http://dx.doi.org/10.4193/rhino11.231.

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Background: The temperature of inhaled air is highly relevant for the humidification process. Narrow anatomical conditions limit possibilities for in vivo measurements. Numerical simulations offer a great potential to examine the function of the human nose. Objective: In the present study, the nasal humidification of inhaled air was simulated simultaneously with temperature distribution during a respiratory cycle. Methods: A realistic nose model based on a multislice CT scan was created. The simulation was performed by the Software Fluent(r). Boundary conditions were based on previous in vivo measurements. Inhaled air had a temperature of 20(deg)C and relative humidity of 30%. The wall temperature was assumed to be variable from 34(deg)C to 30(deg)C with constant humidity saturation of 100% during the respiratory cycle. Results: A substantial increase in temperature and humidity can be observed after passing the nasal valve area. Areas with high speed air flow, e.g. the space around the turbinates, show an intensive humidification and heating potential. Inspired air reaches 95% humidity and 28(deg)C within the nasopharynx. Conclusion: The human nose features an enormous humidification and heating capability. Warming and humidification are dependent on each other and show a similar spacial pattern. Concerning the climatisation function, the middle turbinate is of high importance. In contrast to in vivo measurements, numerical simulations can explore the impact of airflow distribution on nasal air conditioning. They are an effective method to investigate nasal pathologies and impacts of surgical procedures.

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Wang, Yan Xia, and Min Dong. "Numerical Simulation for Temperature of Ceramic Honeycomb Regenerator." Advanced Materials Research 562-564 (August 2012): 359–62. http://dx.doi.org/10.4028/www.scientific.net/amr.562-564.359.

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Ceramic honeycomb regenerator as a critical component about the coalmine ventilation air methane thermal oxidation was proposed for a self-developed thermal reverse-flow reactor. A three-dimensional simulation model was established to obtain the distribution of temperature and velocity of gas, and the temperature variation of honeycomb at the length direction. The outlet temperature of gas variation with time was also obtained. The result could provide valuable reference for design calculation of the oxidizer unit and the later study of the thermal shock resistance.

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Chen, Ming Dong, and Xue Bing Liu. "Numerical Simulation on V Shaped Solar Flat-Plate Air Collector." Advanced Materials Research 594-597 (November 2012): 2175–78. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.2175.

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The V-shaped solar flat-plate air collector was design in order to improve the efficiency of solar flat-plate air collector, and the heat transfer model was established on the base of solar collector working principle. Internal temperature distribution of collector and temperature change rule under different sunshine condition is simulated and the relation of collector height, solar radiation intensity and collector efficiency is analyzed. The result showed that internal air temperature of collector increases with collector height increase and gradually achieves a stable value. It will provide a theoretical basis for collector layout of solar house.

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Cao, Ling Yu, Jia Hua Wu, Yue Hu, Xue Bo Gu, Wei Wei Liu, and Hai Zhong Cao. "Cooling Effect of Mechanical Ventilation in Grape Greenhouse Based on CFD Numerical Simulation." Applied Mechanics and Materials 448-453 (October 2013): 2890–96. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.2890.

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The effect of air volume supplied by top mechanical ventilation on multi-span greenhouse temperature field is studied with different ambient temperatures through CFD numerical simulation. The cooling effects of different mechanical ventilation volumes are compared in the same ambient temperature conditions such as summer calm and high illumination. Thus, the best supply air volume is found to provide a theoretical support for mounting ventilator at multi-span greenhouse top for cooling. Results show that a smaller mechanical ventilation volume can meet the cooling requirements when temperature is lower outside greenhouse. However, single mechanical ventilation has been unable to meet the cooling requirement when ambient temperature is too high outside greenhouse.

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Zhang, Zhen Wei, Ying Yu, Jie Leng, and Su Juan Zhang. "Numerical Simulation of Temperature Field in the Cyclone." Advanced Materials Research 614-615 (December 2012): 208–11. http://dx.doi.org/10.4028/www.scientific.net/amr.614-615.208.

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The temperature distribution of the cyclone was analyzed in the presented work, which was imitated by using RSM turbulence model of software FLUENT. Temperature difference in different regions is less than one centigrade degree with the maximum temperature in the cone part and the minimum temperature in inlet tube and cylinder part of the cyclone, what’s more, the temperature is relatively higher near the wall. The air compression can lead the higher temperature in the lower part, so the cone part has the maximum temperature. The higher temperature near the wall is caused by the friction between the wall and flow.

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Zhang, Meng, and Xiao Hong Zhou. "Numerical Simulation Flow and Temperature Fields of Fiber Air Dispersion System." Key Engineering Materials 671 (November 2015): 242–47. http://dx.doi.org/10.4028/www.scientific.net/kem.671.242.

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Fiber air dispersion system (FADS) is an advanced flexible ventilation terminal in ventilated areas. Its benefits are numerous, which are air diffusion without feeling, anti-condensation, easy cleaning and low cost etc. The technology of computational fluid dynamics (CFD) was used in this paper. At first, a physical model of the environment conditioned by FADS was built. Then, the both field of temperature and flow in the environment was simulated. The boundary conditions and parameters was measured and calculated. Finally, the numerical results were verified by comparing with the experiment data to confirm the reliability of the model. Meanwhile, by using the indoor air evaluation standard, FADS was confirmed to provide a more comfortable environment and better air quality.

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He, Jiang, and Kai Qiong Liu. "Numerical Analysis of Passive Microclimatic-Modifying Effects of a Moist Void-Brick Wall." Applied Mechanics and Materials 193-194 (August 2012): 1156–64. http://dx.doi.org/10.4028/www.scientific.net/amm.193-194.1156.

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As a passive cooling strategy aimed at controlling increased surface temperatures and creating cooler urban environments, a passive evaporative cooling wall constructed of moist void bricks was developed. The wall is capable of absorbing water and allows wind penetration, thus reducing their surface temperatures by means of water evaporation. This paper presents a numerical simulation method to predict and evaluate microclimatic modifying effects (air temperature reduction, ventilation cooling and vapor generation) of the wall in urban locations where installation of the wall is under consideration. This simulation is performed by coupling computational fluid dynamics (CFD) with a 3D-CAD-based thermal simulation tool. Methodology of the coupled simulation was described in this paper. In order to demonstrate the applicability of the proposed simulation method, a case study was performed to predict and evaluate the thermal improvement effect of the wall on thermal comfort at a rest station where the wall was installed. Simulation results show that, in terms of air temperature, airflow, humidity and surface temperature distributions, this simulation method can provide quantitative predictions and evaluations of microclimatic modifying effects resulting from the application of the wall.

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Che, Qiang. "Numerical Simulation of Thermal Environment in High Heat Tunnel." Advanced Materials Research 516-517 (May 2012): 519–23. http://dx.doi.org/10.4028/www.scientific.net/amr.516-517.519.

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With the increasing depth of coal mining, problems of high temperature thermal damage in mine become more and more serious. A high heat tunnel thermal environment case is numerical simulated in the presented work, PMV (Predicted Mean Vote) indices are using to predict the thermal comfort of environment, velocity field, temperature field and PMV values field in high heat tunnel had been obtained. The simulation results indicated while the inlet air velocity is 0.7 m/s, the temperatures in most tunnel area are below 26 °C and the thermal environment conforms to the Coal Mine Safety Regulation in China.

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Zhu, Bo, Bichen Shang, Xiao Guo, Chao Wu, Xiaoqiang Chen, and Lingling Zhao. "Study on Combustion Characteristics and NOx Formation in 600 MW Coal-Fired Boiler Based on Numerical Simulation." Energies 16, no. 1 (December 26, 2022): 262. http://dx.doi.org/10.3390/en16010262.

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The variations in the boiler operation conditions have a great effect on the combustion characteristics and the pollutant formation in furnaces. This work aims to investigate the effects of operational parameters on NOx formation and its distribution in furnaces using the numerical simulation method to obtain the optimum control strategy for reducing NOx emissions. The numerical simulation models of pulverized coal combustion in furnaces involving flow, heat transfer, combustion and NOx formation are established. Taking a 600 MW supercritical opposed firing pulverized coal boiler as the study object, a full-scale three-dimensional physical model of the boiler is constructed with Gambit software. On this basis, the pulverized coal combustion and the NOx formation under various boiler loads are numerically simulated using the software of Ansys Fluent 2021R1, and the accuracy and the reliability of the models established are verified by comparing the simulation data with the field test data. According to the combustion numerical simulation of 128 groups of operating conditions, the effects of boiler load, the air rate and the air temperature on combustion and NOx formation have been emphatically investigated. The simulation results indicate that the formation of NOx and the NOx concentration distribution are mainly affected by the oxygen concentration and the temperature in the furnace. Especially, the effects of the variation in the excess air coefficient, the over-fire air (OFA) ratio, the primary air ratio and the internal secondary air ratio on NOx concentration distribution vary greatly. When the air temperature increases the overall NOx concentration in the furnace increases, and the influence of the secondary air temperature and the OFA temperature is greater than that of the primary air temperature. Large amounts of simulation data are a necessary data source for further study on the NOx prediction model at the economizer outlet, which can improve the prediction ability and the generalization ability of the NOx prediction model.

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Liu, Ze Hua, Yan Liao, and Hao Ping Yu. "Indoor Thermal Environment Research of Air Conditioning Office with Air from Window Gap." Advanced Materials Research 860-863 (December 2013): 1660–65. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.1660.

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The paper presents a numerical simulation study of indoor thermal environment of an air conditioning office in winter in Hengyang. Considering the effect of air infiltration from window gap, the distribution of indoor temperature field, velocity field and humidity field can be obtained when air supply angle is 45° down to the horizontal direction. Compared with simulation which air infiltration is ignored, the results show that average temperature of air conditioning area reduces 0.6 °C in Y = 1.1 m section. Air velocity is larger in Y = 1.1 m air conditioning zone. The air speed is greater than 0.2 m/s in local area, a sense blowing. Average relative humidity is larger in Y = 1.1 m air conditioning area. The research indicates that air infiltration can not be allowed to be neglected in numerical simulation.

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Sun, Cheng Cai, Bo Zhou, and Jie Lv. "Numerical Simulation Analysis of Cold Air Distribution System." Applied Mechanics and Materials 858 (November 2016): 278–81. http://dx.doi.org/10.4028/www.scientific.net/amm.858.278.

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This paper based on an actual project as an example, researching the application of cold air distribution system by using the numerical simulation method. By using Fluent software to establish a three-dimensional physical model, simplificate the physical model, establish proper tuyere model, choose the appropriate turbulence model, select the appropriate boundary conditions. Then simulate indoor airflow organization, get the distribution of temperature field, velocity field in the working area, and evaluate the comfort in the working area. Though the research, this paper provides the appropriate air distribution which is the upper supply air and on opposite side bottom exhaust air. This paper though the numerical simulation concludes that adopts the appropriate air distribution could meet the requirements of indoor thermal comfort.

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Duan, Ran, Jin Fa Xie, and Hong Chao Wang. "Research on the Relation between Automotive Air Conditioning Supply-Air Direction and Cooling Efficiency about Thermal Field of the Passenger Compartment." Applied Mechanics and Materials 472 (January 2014): 191–97. http://dx.doi.org/10.4028/www.scientific.net/amm.472.191.

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The cooling process of unsteady temperature field in the automobile passenger compartment is simulated , making use of computational fluid dynamics software FLUENT and the algorithm of PBCS ,and two equation model is replaced with the three-dimensional turbulence model. And then the workflow is established, which includes DOE, optimization algorithm, approximate model and the numerical simulation. Numerical simulations uses experimental design method to collect data for analysis into the relations and trends of the supply-air direction and the cooling efficiency.The sample points train approximation model, using radial basis function (RBF) neural network approximation model instead of the high cost of the simulation calculation. Multi-island GA is chosen to optimize the supply-air direction. The supply-air direction optimized and the supply-air direction vertical surface of inlet tuyere are calculated by simulation software respectively.Results show that the optimized direction making the car chamber cooling effect is remarkable, by the analysis of the heat flow value and temperature contours of before and after optimization.

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Kang, Zhangyang, Zhaoyang Lu, Manfeng Li, and Qiongqiong Yao. "Numerical simulation of PV/T air collector with gradually expanding and shrinking channels." E3S Web of Conferences 136 (2019): 01046. http://dx.doi.org/10.1051/e3sconf/201913601046.

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CFD technology isused to simulate the PV/T air collector with gradually expanding and shrinking channels, and thegradually expanding and shrinking channels have influence on the temperature of the heat absorbing plate and the temperature outlet air of the PV/T air collector is analyzed.The resultshowsthat the expanding and shrinking channels have adverse effectson the massairflow in the collector,causing the temperature of the heat absorption plate to rise.Increasing the mcan effectively reduce the temperature of the heat absorption plate and enhancethe photoelectricefficiency of the system,and thetemperatureof air outlet will be enhanced.However, themassflowhas greater influence on the outlet temperature, and the increase of the mass flowmakes the outlet temperature decreasemore obvious. As the air mass flow increases, the temperature difference between m=0.0081and m=0.0169will increase. When the massflow is 0.0029kg/s, the temperature difference is 1.69℃; when the massflow is 0.0169, the temperature difference is 2.35℃.

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Singh, Jashanpreet, and Chanpreet Singh. "Numerical analysis of heat dissipation from a heated vertical cylinder by natural convection." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 231, no. 3 (August 16, 2015): 405–13. http://dx.doi.org/10.1177/0954408915600109.

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Natural convection heat transfer from a hot vertical hollow brass cylinder has been studied experimentally and numerically. The governing equations of continuity, momentum and energy are discretised by using an implicit finite difference technique. The velocity and temperature profiles, boundary layer thickness, local and average heat transfer coefficient are obtained using the numerical simulation. The predictions of the numerical simulation are compared with the experiments conducted on a laboratory-scale apparatus and with the results obtained from analytical solutions available in literature. The numerical simulation results are obtained for two fluids; air and water vapour whereas the experiments are conducted for air only. The induced flow is laminar in both the simulation and the experiments. The dependence of boundary layer thickness on Prandtl number is discussed. The numerically obtained Nusselt number is found quite close to the analytical one. The results show the heat dissipation from the cylinder to surrounding fluid is higher for air than for water vapour. The various factors that affect the comparison of the experimental results with the numerical simulation are discussed.

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Liu, Jian Long, Hai Ping Zhang, Han Qing Wang, and Yu Hui Chu. "Numerical Simulation Analysis of Composite Air Purifying Device." Applied Mechanics and Materials 405-408 (September 2013): 2980–85. http://dx.doi.org/10.4028/www.scientific.net/amm.405-408.2980.

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To solve the technical problems existing in air purification, a multilevel air purification device was presented. And the new device is the combination of catalytic purifying technology of low-temperature plasma, nanoscaled titania and dual-band ultraviolet. For further studies on performance of the composite purification device, the device has been numerically simulated, through CFD simulation technology, by employing gas phase turbulence model, porous medium model and stochastic particle trajectory model. Contrast and analysis was made on velocity distribution, particle motion state and the pressure distribution of the internal flow field under different wind speed. The most appropriate wind speed could provide better centrifugal effect and less pressure loss. So some rules of velocity and pressure distribution in internal device were acquired.

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Marshalova, G. S., T. A. Baranova, Yu V. Zhukova, A. D. Chorny, A. B. Sukhotsky, E. S. Danil’chik, A. A. Mironov, R. G. Kаdyrov, and I. A. Popov. "Numerical simulation of heat transfer and hydraulic losses of air-cooled exhaust-shaft apparatuses." Proceedings of the National Academy of Sciences of Belarus, Physical-Technical Series 67, no. 3 (October 8, 2022): 298–306. http://dx.doi.org/10.29235/1561-8358-2022-67-3-298-306.

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The article presents the numerical simulation results on heat transfer and hydraulic losses of air-cooled exhaust-shaft apparatuses. Studies were made on air-cooled apparatuses in which four-row bundles of staggered finned tubes were placed. Numerical simulation used a gas dynamic solver Ansys Fluent. Menter’s shear stress transport κ-ω model was invited to close the Reynolds equations. The obtained numerical results allowed us to visualize air flow in the bundle and the exhaust shaft, as well as to establish an inhomogeneous distribution of velocities and temperatures. We found that the temperature distribution in the flow passing through the exhaust shaft depends on the height of the exhaust shaft. We also established that at small shaft heights in the wake behind a bundle because of the wake oscillatory motion, the dynamic and temperature inhomogeneous distributions take place, resulting in the cold air suction through the shaft from the environment. With an increase in the shaft height, the inhomogeneous temperature distribution moves upstream the air flow in the shaft and the inhomogeneous temperature distribution attenuates. We can say that maximum heat transfer at the same hydraulic losses is achieved when mounting a shaft with a height of H > 1.16 m. The results obtained can be used for the modernization of existing air-cooled apparatus, as well as for the design of new devices with an exhaust shaft.

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Xiao, Ping Yang, and Zhen Wei Zhang. "Numerical Simulation of Temperature Field in the Cyclone." Advanced Materials Research 479-481 (February 2012): 462–66. http://dx.doi.org/10.4028/www.scientific.net/amr.479-481.462.

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This paper mainly focuses on the numerical simulation of temperature field in the cyclone separation. The authors took advantage of RSM turbulence model of software FLUENT to imitate the temperature field. This thesis puts forward the temperature distribution of the cyclone, and figures out that the overall temperature is 373°C. Temperature difference in different region is less than one centigrade degree with the maximum temperature in the cone part and the minimum temperature in inlet tube and cylinder part of the cyclone, what’s more, the temperature is relatively higher near the wall. The air compression can lead the higher temperature in the lower part, so the cone part has the highest temperature. The higher temperature near the wall is caused by the friction between the wall and flow.

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Jiang, Xue, Ji Hua Bao, Yan Yu, and Ming Xia Gu. "The Numerical Simulation of Air-Cooled Plate-Fin Heat Exchanger." Advanced Materials Research 314-316 (August 2011): 1472–77. http://dx.doi.org/10.4028/www.scientific.net/amr.314-316.1472.

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According to the periodic structure of the plate-fin heat exchanger, 3D model of the heat exchanger is established which simplifies the computation amount of the numerical simulation on flow field and temperature field. The relationship of fluid velocity, temperature, pressure drop and heat transfer coefficient is analyzed. The flow and heat transfer characteristics can be well predicted. Based on the simulation results, the conclusion makes reference to the design of plate-fin heat exchanger.

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Ni, Pei Yong, Xiang Li Wang, and Sheng Li Wei. "Numerical Simulation of Thermodynamic Parameters during Diffusion Combustion for Vehicle Air Heater." Applied Mechanics and Materials 80-81 (July 2011): 783–87. http://dx.doi.org/10.4028/www.scientific.net/amm.80-81.783.

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The diffusion combustion of the air heater was numerically simulated at different excess air coefficient using Fluent software. The distributions of the temperature, gas flow velocity, and turbulence intensity were present. And the heat flux was calculated. The result showed that the excess air coefficient had a little effect on the maximum combustion temperature distribution. As the excess air coefficient increased, the axial temperature at first increased and then decreased, and in contrast both the total heat flux and radiation heat flux decreased. The radial temperature, velocity and turbulence intensity increased firstly and then decreased at the same operation condition. The measured exhaust temperature increased with time. At 90 second, it was about 250 °C, which showed good agreement with simulation result. This provides theory basis for the reform of the heater.

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Zhong, Yong, Ting Yong Fang, and Tao Lin Zhang. "The Simulation Study on Heat Dissipation of High Power LED Based on the Natural Convection." Applied Mechanics and Materials 475-476 (December 2013): 1454–58. http://dx.doi.org/10.4028/www.scientific.net/amm.475-476.1454.

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In this paper, we studied on the heat dissipation of high power LED in numerical simulation by the large eddy simulation numerical methods with the simulation software FDS, and studied the temperature distribution and heat pipe cooling respectively, etc.. We did the numerical simulation research on the heat dissipation of high power LED fin by numerical simulation, and obtained the numerical solution of all the LED temperature field and flow field. The air flow rate near the radiating surface was low; the fin surface temperature distribution was basic uniform and closed to the temperature of the constant heat reservoir. The analysis of the results of numerical simulation provided references for the improvement of optimal design of LED radiator.

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Sun, Ji Chao, Quan Chen Gao, Hai Biao Wang, and Ying Ming Li. "Numerical Simulation of Coupled Rainfall and Temperature of Unsaturated Soils." Key Engineering Materials 306-308 (March 2006): 1433–38. http://dx.doi.org/10.4028/www.scientific.net/kem.306-308.1433.

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As a kind of porous medium made of grains, water and air, under some transfer influences, the soil in some certain atmosphere circumstances has the transfer of heat, water and air, which leads to people’s interesting. The change of temperature influences engineering, such as soils’ consolidation, expansion, grains’ force and pore pressure and so on. The paper gives a coupled numerical simulation of atmosphere rain, temperature of soils and gives the correlation between rain and temperature in unsaturated soils. The different clock of the rain begin in day little influences seepage field, due to the superficial part the sun influences; otherwise the temperature has an great influence on the permeability coefficient and diffusion coefficient.

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Pimsamarn, Jindarat, Panit Kitsubun, and Rabin Tongruk. "Numerical Simulation of Air Flow and Temperature Distribution in Yarn Drying Room." ASEAN Journal of Chemical Engineering 11, no. 2 (February 11, 2012): 8. http://dx.doi.org/10.22146/ajche.50059.

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This research studied the recovery of wasted heat from exhaust air releasing from the compressor to increase the drying efficiency. The yarn drying room model was developed using Computational Fluid Dynamics (CFD) so as to study the distribution of air flow and temperature numerically. The most suitable design of the drying room considering the decrease of drying time such as the locations of hot air inlet and outlet were investigated. At the exhaust air outlet position, the average exhaust air temperature is 56°C, while the average flow rate and relative humidity are 1.75 m/s and 16.2 percent, respectively. The hydraulic calculation revealed that the appropriate duct size was 0.412 x 0.412 m2 width and height. The hot air temperature after transferring through air duct was decreased from 56°C to 52°C. The simulation results showed that the appropriate inlet position is at the ceiling and split into 4 inlet positions which had 0.152 x 0.152 m2 width and height. The most appropriate outlet position was 3 m above the ground in order to achieve the highest distribution of moisture content with standard deviation of 1.9 x 10-4. The locations which had the high accumulation of moisture were at the center and both sides of the drying room due to the low air turbulence. From this configuration, the drying time was decreased from 2 days to 89 minutes. Furthermore, after the 2 air circulators were installed in the drying room, the distribution of moisture content, represented in term of standard deviation, was about 1.5 x 10-4. As a consequence, the drying time could be reduced to 78 minutes, but the monthly electricity cost of air circulators was around 590 baht.

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Dhahri, Maher, and Hana Aouinet. "CFD investigation of temperature distribution, air flow pattern and thermal comfort in natural ventilation of building using solar chimney." World Journal of Engineering 17, no. 1 (January 13, 2020): 78–86. http://dx.doi.org/10.1108/wje-09-2019-0261.

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Purpose The purpose of this study is to investigate air flow, temperature distribution and thermal confort in natural ventilation induced by solar chimney for different operating. Design/methodology/approach Numerical simulation is performed using a commercial computational fluid dynamics (CFD) package ANSYS CFX software to understand the effects of air temperature, air velocity and solar heat flux on the performance of the solar chimney and thermal comfort. The comfort level was evaluated using the air diffusion performance index (ADPI) according to ASHRAE (55-210). The flow was investigated at inclination angles 45° solar heat flux 550-750 W/m2 and in a solar chimney of 1.4 m length, 0.6 m width and 0.20 m air gab. Findings The numerical results from the present simulation were first validated with experimental data, which was used for the thermal comfort indexes calculation. The obtained results of the analysis showed that the used numerical technique could accurately predict air flow and temperature distribution in natural ventilated building using solar chimney; the air temperature, air velocity and solar heat flux have a significant impact on thermal comfort; the temperature of 19°C with velocity of 0.15 m.s−1 gives the best effective draft temperature (EDT) satisfy ASHRAE (55-210) criteria that V = 0.35 m.s−1 and EDT range between −1.7 and 1.1. Originality/value In the present paper, air flow, temperature distribution and thermal comfort inside a room equipped with inclined solar chimney were numerically investigated and analyzed. The commercial CFD package (CFX 15) is used. Calculations are carried out in an empty room without any human or mechanical activity and the numerical results are compared with measurement points.

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Joudi, Ali, Mathias Cehlin, Harald Svedung, Mats Rönnelid, and Bahram Moshfegh. "Numerical and experimental investigation of the influence of infrared reflective interior surfaces on building temperature distributions." Indoor and Built Environment 26, no. 3 (July 28, 2016): 355–67. http://dx.doi.org/10.1177/1420326x15609966.

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Radiative properties of interior surfaces can affect not only the building heat flux but also the indoor environment, the latter of which has not been thoroughly investigated. The aim of this study is to analyse the effect of surface emissivity on indoor air and surface temperature distributions in a test cabin with reflective interior surfaces. This was done by comparing experimental and simulation data of the test cabin with that of a normal cabin. This study employs transient computational fluid dynamics (CFD) using re-normalisation group (RNG) k– ε model, surface-to-surface radiation model and an enhanced wall function. Boundary conditions were assigned to exterior surfaces under variable outdoor conditions. The numerical and the measurement results indicate that using interior reflective surfaces will affect the indoor air temperature distribution by increasing the vertical temperature gradient depending on the time of the day. CFD simulations with high spatial resolution results show increased interior surface temperature gradients consistent with the increased vertical air temperature gradient. The influence of reflective surfaces is potentially greater with higher indoor surface temperature asymmetry. The vertical indoor air temperature gradient and surface temperatures are important parameters for indoor thermal comfort.

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Qiang, He, Shen Yuan, Ren Fengzhang, Li Lili, and Volinsky Alex A. "Numerical simulation and experimental study of the air-cooled motorized spindle." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 231, no. 12 (February 16, 2016): 2357–69. http://dx.doi.org/10.1177/0954406216631781.

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In this study, numerical methods are used to investigate the flow and temperature fields of the air-cooled motorized spindle. The wind speed effects on the motorized spindle temperature and the relationships between the rotating speed, vibration and noise are studied experimentally. The purpose of this work is to provide the basis for optimization design of the air-cooled motorized spindle. First, the boundary conditions are defined and the wind speed in the heat sink groove, fluid field of the fan area and temperature distribution of the spindle in the thermal steady state are predicted by the finite element method. Second, the temperature, wind speed, vibration of the key points on the motorized spindle and the noise are measured experimentally. The results show that the wind speed of the fan area is high in the center and low near the wall. The spindle temperature is higher in the area of contact with the rotor and the front bearings, while changes in the heat sink section have little effect on the wind speed. It is found experimentally that the vibration, noise and temperature increase with rotating speed. The numerical and experimental results are consistent. It is suggested to improve the design of the motorized spindle through optimizing the blade structure to decrease the temperature, vibration and noise.

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Salsabilah, Naqiyyah, Marwa Efira Karuniahaj, Duhaul Biqal Kautsar, Ni Made Intan Putri Suari, Heru Setyawan, Tantular Nurtono, and Widiyastuti. "Simulation of Microencapsulation Avocado Seeds Oil by Spray Drying." IOP Conference Series: Earth and Environmental Science 830, no. 1 (September 1, 2021): 012061. http://dx.doi.org/10.1088/1755-1315/830/1/012061.

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Abstract Drying air inlet temperature is one of the critical variables in the microencapsulation process by spray drying. However, when spray drying is carried out at inappropriate drying air inlet temperature, it can impact the particle produced. This study presents a simulation of spray drying from a mathematical model was developed to determine the effect of drying air inlet temperature on moisture content, particle diameter, particle density, and drying air outlet temperature in the microencapsulation process of avocado seeds oil as core materials and gum arabic as wall materials. For this aim, the mathematical model was developed then simulated using a matrix laboratory (Matlab) computer program with Euler numerical method for drying air inlet temperatures of 160, 180, and 200 °C. The selected model was validated with Cotabarren’s experimental results indicating the model was acceptable. The particles’ moisture contents predicted from simulation results are 1.170, 1.049, and 0.933 kg water/kg solid for 160, 180, and 200 °C, respectively. On the other hand, the predicted particle diameters are 29.73, 29.49, and 29.23 urn for 160, 180, and 200 °C, respectively. The predicted particle densities are 1215.72, 1225.21, and 1233.25 kg/m3 for 160, 180, and 200 °C, respectively. The prediction of drying air outlet temperatures was 39.76, 41.94, and 43.89 °C for inlet air temperatures of 160, 180, and 200 °C, respectively. The proposed models’ simulation results show that the higher temperatures caused lower particle moisture content, smaller particle diameter, and higher particle density. Also, the outlet drying air temperatures were always the same as the outlet particle temperatures.

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Salsabilah, Naqiyyah, Marwa Efira Karuniahaj, Duhaul Biqal Kautsar, Ni Made Intan Putri Suari, Heru Setyawan, Tantular Nurtono, and Widiyastuti. "Simulation of Microencapsulation Avocado Seeds Oil by Spray Drying." IOP Conference Series: Earth and Environmental Science 830, no. 1 (September 1, 2021): 012061. http://dx.doi.org/10.1088/1755-1315/830/1/012061.

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Abstract Drying air inlet temperature is one of the critical variables in the microencapsulation process by spray drying. However, when spray drying is carried out at inappropriate drying air inlet temperature, it can impact the particle produced. This study presents a simulation of spray drying from a mathematical model was developed to determine the effect of drying air inlet temperature on moisture content, particle diameter, particle density, and drying air outlet temperature in the microencapsulation process of avocado seeds oil as core materials and gum arabic as wall materials. For this aim, the mathematical model was developed then simulated using a matrix laboratory (Matlab) computer program with Euler numerical method for drying air inlet temperatures of 160, 180, and 200 °C. The selected model was validated with Cotabarren’s experimental results indicating the model was acceptable. The particles’ moisture contents predicted from simulation results are 1.170, 1.049, and 0.933 kg water/kg solid for 160, 180, and 200 °C, respectively. On the other hand, the predicted particle diameters are 29.73, 29.49, and 29.23 urn for 160, 180, and 200 °C, respectively. The predicted particle densities are 1215.72, 1225.21, and 1233.25 kg/m3 for 160, 180, and 200 °C, respectively. The prediction of drying air outlet temperatures was 39.76, 41.94, and 43.89 °C for inlet air temperatures of 160, 180, and 200 °C, respectively. The proposed models’ simulation results show that the higher temperatures caused lower particle moisture content, smaller particle diameter, and higher particle density. Also, the outlet drying air temperatures were always the same as the outlet particle temperatures.

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Su, Ya Xin, and Xin Wan. "Numerical Simulation of the Natural Ventilation in Workshop with Different Air Inlet Openings." Advanced Materials Research 250-253 (May 2011): 3187–90. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.3187.

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The authors numerically simulated the natural ventilation in an industrial workshop with heat sources by computational fluid dynamics (CFD) method when the height of air inlet opening was set different values. The flow and temperature fields in the workshop were simulated by realizable k-e turbulent model combined with a Discrete Ordinate (DO) radiation. Results showed the height of air inlet opening strongly influenced the flow and temperature fields in the workshop. When the height of air inlet opening increased, the natural ventilation was improved and more fresh air flowed into the workshop. When the height of air inlet opening increased from 1.7 meters to 3 meters, the temperature in the operation zone of the workshop dropped. When the height of air inlet opening increased from 2.7 meters to 3.7 meters, the temperature in operation zone did not change much, while the temperature in the upper zone of the workshop dropped. The heat distribution factor decreased first with the height of air inlet opening and then increased again. When the height of air inlet opening was 3 meters, the heat distribution factor was minimal.

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Liu, Shui Chang, Zheng Qi Gu, Yong Zhang, and Zun Jin Fan. "Study on Performance of High Low Temperature Radiator Group by a Combination Method." Advanced Materials Research 354-355 (October 2011): 394–400. http://dx.doi.org/10.4028/www.scientific.net/amr.354-355.394.

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Establishes 3d numerical simulation model of water side and air side for ribbon-tubular radiator, studies effect of air velocity on air side heat transfer capacity and drag characteristics by using CFD method, based on double side 3d simulation result, and then calculates the import and export water temperature of the high low temperature radiator group with procedure. The calculated water temperatures are coinciding with experimental data. Then analyzes the influence rule of different wave combinations to the radiator group performance by the method of simulation and procedure calculation, the result is reference theory for the structure optimization and matching of the radiator group.

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Wang, Xun, Yong Gang Lei, Fei Wang, and Jun Qin Hou. "Numerical Simulation on the Characteristic of a Solar Chimney." Advanced Materials Research 614-615 (December 2012): 712–15. http://dx.doi.org/10.4028/www.scientific.net/amr.614-615.712.

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The air flow and heat transfer performance of a solar chimney with the inclination angle of 30deg was investigated by using numerical method. It was found that there is a correlation between solar radiation and ventilation rate and there is a temperature field under the effect of thermal pressure. The research result shows that in the certain scope of research, the ventilation rate is influenced by solar radiation. With the solar radiation increasing, the temperature of chimney decrease along direction from the heat absorption wall to the glass cover-plate surface, and the air flow speed distribute nonuniform along the channel width direction.

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Journal articles on the topic 'Air - Temperature - Numerical Simulation'

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