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Journal articles on the topic 'Fluid flow and heat transfer'

Author: Grafiati

Published: 6 September 2023

Last updated: 26 July 2025

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1

Prasanna Kumar, T. "Casson Fluid Flow and Heat Transfer Past an Exponentially Stretching Surface." International Journal of Science and Research (IJSR) 11, no. 6 (2022): 366–70. http://dx.doi.org/10.21275/sr22604194759.

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2

Muthusamy, P., and Palanisamy Senthil Kumar. "Waste Heat Recovery Using Matrix Heat Exchanger from the Exhaust of an Automobile Engine for Heating Car’s Passenger Cabin." Advanced Materials Research 984-985 (July 2014): 1132–37. http://dx.doi.org/10.4028/www.scientific.net/amr.984-985.1132.

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The main objective of our work is to analysis the heat transfer rate for various fluids with different matrix heat exchanger (MHE) models and flow characteristic in matrix heat exchanger by using computational fluid dynamics (CFD) package with small car. The amount of heat carried by the cold fluid from hot fluid is mainly depends upon the mass flow rate of the working fluid. The heat transfer area per unit volume of tube is more. So, it increases the temperature of the cold fluid. Here, the hot and cold fluids are moving in the alternate tubes of heat exchanger in the counter flow direction.

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3

Nallusamy, S. "Characterization of Al₂O₃/Water Nanofluid through Shell and Tube Heat Exchangers over Parallel and Counter Flow." Journal of Nano Research 45 (January 2017): 155–63. http://dx.doi.org/10.4028/www.scientific.net/jnanor.45.155.

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Nanotechnology has become one of the fastest growing scientific and engineering disciplines. Nano fluids have been established to possess enhanced thermal and physical properties such as thermal conductivity, thermal diffusivity, viscosity and convective heat transfer coefficients. The aim of this research article is to analyze the overall heat transfer coefficient by doing an experimental investigation on the convective heat transfer and flow characteristics of a nano fluid. In this research, an attempt was made for the nano fluid consisting of water and 1% volume concentration of Al2O3/water

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4

Yogesh, Sharma, and Yadav Neeraj. "Enhancement in Heat Exchange Process in a Shell and Tube Heat Exchanger using Nano-Particles." International Journal of Engineering and Advanced Technology (IJEAT) 9, no. 3 (2020): 1791–95. https://doi.org/10.35940/ijeat.C4783.029320.

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Nanoparticles and nano-fluids are having its significant role in transforming and improvising the existing tools and techniques of science and other research. This experimental study deals with the parametric analysis of Al2O3 of size 20-30 nm and CuO of size 30-50 nm nanoparticles to improve the effectiveness of a shell and tube heat exchanger. Nanoparticles used in heat exchangers improved performance through better heat transfer characteristics. An experimental investigation was done on the forced convective heat transfer and flow characteristics of the nano-fluid flowing in a horizontal sh

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5

Coulson, J. M., J. F. Richardson, J. R. Backhurst, and J. H. Harker. "Fluid flow, heat transfer and mass transfer." Filtration & Separation 33, no. 2 (1996): 102. http://dx.doi.org/10.1016/s0015-1882(96)90353-5.

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6

Qian, H., S. Kudashev, and V. Plotnikov. "Plotnikov V. Pulsating Enhanced Heat Transfer." Bulletin of Science and Practice 5, no. 8 (2019): 70–80. https://doi.org/10.33619/2414-2948/45/08.

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The paper mainly introduces the mechanism of turbulent fluid heat transfer enhancement and the factors affecting heat transfer. The physical parameters of pulsating fluid mainly include pulsation frequency and amplitude. The factors affecting heat transfer are the physical properties of the pulsating fluid and the installation of a pulsation generator. The position, the type of pulsation occurrence, the natural frequency of the heat exchange system, etc.; the methods for strengthening the pulsating heat transfer characteristics mainly include disturbing flow elements, changing the size of the

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7

Shaik, Faqruddin*1 Akula Nagaraja2 MV Kishore Kumar3 &. R. Chandra Sekhar Reddy4. "DESIGN AND ANALYSIS OF RADIATOR USING NANOFLUIDS." GLOBAL JOURNAL OF ENGINEERING SCIENCE AND RESEARCHES 6, no. 6 (2019): 220–31. https://doi.org/10.5281/zenodo.3262360.

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Heat exchangers play an important part in the field of energy conservation, conversion and recovery. Numerous studies have focused on direct transfer type heat exchanger, where heat transfer between fluids occurs through a separating wall or into and out of a wall in a transient manner. There are two important phenomena happening in a heat exchanger: fluid flow in channels and heat transfer between fluids and channel walls. Thus, improvements to heat exchangers can be achieved by improving the processes occurring during those phenomena. Nano fluids, on the other hand, display much superior hea

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8

Zhou, Guo Fa, and Ting Peng. "Heat Transfer Enhancement of Viscoelastic Fluid in the Rectangle Microchannel with Constant Heat Fluxes." Applied Mechanics and Materials 117-119 (October 2011): 574–81. http://dx.doi.org/10.4028/www.scientific.net/amm.117-119.574.

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It has been found that viscoelastic fluid has evident heat transfer enhancement function in macro scale. But in micro scale, viscoelastic fluid’s flow and heat transfer characteristics are still unknown. In this paper, the heat transfer process of viscoelastic fluid in the microchannel is studied by numerical simulation method. The simulation results show that the maximum heat transfer enhancement of viscoelastic fluid is up to 800%, compared with pure viscous fluid. The viscoelastic fluid has such obvious heat transfer enhancement function because of its strong secondary flow. Laminar sub-lay

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9

Makinde, O. D., R. J. Moitsheki, R. N. Jana, B. H. Bradshaw-Hajek, and W. A. Khan. "Nonlinear Fluid Flow and Heat Transfer." Advances in Mathematical Physics 2014 (2014): 1–2. http://dx.doi.org/10.1155/2014/719102.

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10

Rao, H. V. "Isentropic recuperative heat exchanger with regenerative work transfer." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 214, no. 4 (2000): 609–18. http://dx.doi.org/10.1243/0954406001523948.

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A counter-flow heat exchanger is considered to be the ideal method for recuperative heat transfer between hot and cold fluid streams. In this paper the concept of an isentropic heat exchanger with regenerative work transfer is developed. The overall effect is a mutual heat transfer between the two fluid streams without any net external heat or work transfers. The effectiveness for an isentropic heat exchanger with regenerative work transfer is derived for the case of fluid streams with constant specific heats and it is shown that it is greater than unity. The ‘isentropic effectiveness’ of a he

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11

Zhang, Junqiang, Zhengping Zou, and Chao Fu. "A Review of the Complex Flow and Heat Transfer Characteristics in Microchannels." Micromachines 14, no. 7 (2023): 1451. http://dx.doi.org/10.3390/mi14071451.

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Continuously improving heat transfer efficiency is one of the important goals in the field of energy. Compact heat exchangers characterized by microscale flow and heat transfer have successfully provided solutions for this purpose. However, as the characteristic scale of the channels decreases, the flow and heat transfer characteristics may differ from those at the conventional scale. When considering the influence of scale effects and changes in special fluid properties, the flow and heat transfer process becomes more complex. The conclusions of the relevant studies have not been unified, and

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12

Yue, Qingwen, Xide Lai, Xiaoming Chen, and Ping Hu. "Study on heat transfer characteristics of flow heat coupling of horizontal spiral tube heat exchanger." Thermal Science and Engineering 4, no. 2 (2021): 23. http://dx.doi.org/10.24294/tse.v4i2.1516.

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In view of the complex structural characteristics and special operating environment of the horizontal spiral tube heat exchanger of the shaft sealed nuclear main pump, the numerical simulation method of flow heat coupling is used to analyze the influence of the flow and temperature changes of the fluid on the shell side on the flow field and temperature field of the heat exchanger, explore the influence rules of the inlet parameters on the flow and heat transfer characteristics of the fluid in the heat exchanger, and analyze the enhanced heat transfer performance of the heat exchanger by using

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13

Dr., G. V. P. N. Srikanth, Sekhar Gorthi Raja, and G. Srinivas Dr. "THE CONVECTIVE HEAT AND MASS TRANSFER OF NANO-FLUID PAST A PERMEABLE INCLINED OSCILLATING FLAT PLATE." International Journal of Multidisciplinary Research and Modern Education (IJMRME) 2, no. 2 (2016): 10–20. https://doi.org/10.5281/zenodo.61601.

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<em>The significant research has seen with nano fluid flow and heat transfer. But still there is a wide scope of research in mass transfer with nano fluids due to Brownian motion of particles. A theoretical investigation has attempted in this paper to study the chemical reaction effects during mass transfer. We have studied convective heat and mass transfer of MHD nano fluid flow past inclined, oscillating permeable flat plate with radiation and heat source. </em>

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14

Gunale, Rahul B., Ashish S. Gajare, Omkar D. Khollam, Aakash G. Gawade, and Sanchit S. Salvi. "Experimental Evaluation of Nanofluid for Improved Cooling Efficiency in an AL Mini Channel Heat Sink." International Journal for Research in Applied Science and Engineering Technology 10, no. 5 (2022): 3400–3406. http://dx.doi.org/10.22214/ijraset.2022.43146.

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Abstract: Efficient heat transfer has become major need these days. In this thesis, both experimental and CFD investigations have to be carried out to evaluate the cooling performance of a mini-channel consisting of fins on upper surface of flat plate. Nano fluids contain a small fraction of solid nano particles in base fluids flowing through groves in bottom plate attached with heater at base. Nano fluids cools small channel heat sinks, have been anticipated to be an excellent heat dissipation method for the next generation electronic devices. Computational Fluid Dynamics (CFD) simulations is

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15

Ahmed, Minhaz, and Prasanjit Das. "Experimental Investigation of Convection Heat Transfer in a Helical Coil and Shell Heat Exchanger and Drag Reduction by Guar Gum." SciEn Conference Series: Engineering 1 (May 7, 2025): 125–29. https://doi.org/10.38032/scse.2025.1.23.

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The prime motive of this experimental study is to design a helical coil and shell heat exchanger and analyzing thermal performance based on convection heat transfer. Then, a polysaccharide, guar gum is used to lessen the drag force of cold water in helical pipe inside the heat exchanger, which ultimately lowers the amount of pumping power needed. The shell is made by rolling a square sheet and tube is formed by bending of straight pipe. Then, they are joined by spot welding to fabricate the complete heat exchanger. The rate of flow of cold fluid (tube side) is varied keeping the hot fluid flow

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16

Wen, Xiangyue, Xiting Long, and Zhaoying Yang. "Numerical and Analytical Study of Fluid Flow and Thermal Transfer in a Rough Fracture." Geofluids 2022 (May 31, 2022): 1–12. http://dx.doi.org/10.1155/2022/2683980.

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The surface morphology of rough fractures significantly affects the fluid flow and heat transfer characteristics in the fractures. A thermal-flow coupling model with specific geometric fractures was established to investigate the influence of surface morphology on the heat transfer characteristics of a single fracture. The effect of temperature on the physical properties of rocks and fluids was included in the study to reflect the actual situation more realistically. The research results show that the temperature of the fluid in the rough fracture is nonlinearly distributed along the flow dire

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17

Rajavel, Rangasamy, and Kaliannagounder Saravanan. "Heat transfer studies on spiral plate heat exchanger." Thermal Science 12, no. 3 (2008): 85–90. http://dx.doi.org/10.2298/tsci0803085r.

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In this paper, the heat transfer coefficients in a spiral plate heat exchanger are investigated. The test section consists of a plate of width 0.3150 m, thickness 0.001 m and mean hydraulic diameter of 0.01 m. The mass flow rate of hot water (hot fluid) is varying from 0.5 to 0.8 kg/s and the mass flow rate of cold water (cold fluid) varies from 0.4 to 0.7 kg/s. Experiments have been conducted by varying the mass flow rate, temperature, and pressure of cold fluid, keeping the mass flow rate of hot fluid constant. The effects of relevant parameters on spiral plate heat exchanger are investigate

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18

Sheremet, Mikhail A., and Ioan Pop. "Natural convection combined with thermal radiation in a square cavity filled with a viscoelastic fluid." International Journal of Numerical Methods for Heat & Fluid Flow 28, no. 3 (2018): 624–40. http://dx.doi.org/10.1108/hff-02-2017-0059.

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Purpose The purpose of this paper is to study natural convective heat transfer and viscoelastic fluid flow in a differentially heated square cavity under the effect of thermal radiation. Design/methodology/approach The cavity filled with a viscoelastic fluid is heated uniformly from the left wall and cooled from the right side while insulated from horizontal walls. Governing partial differential equations formulated in non-dimensional stream function, vorticity and temperature with corresponding boundary conditions have been solved by finite difference method of second order accuracy. The effe

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19

Monu, Sharma. "Studies on the Enhancement of Heat Transfer in the Counter-Flow Heat Exchanger(HX)- A Review." Journal of Advanced Mechanical Sciences 2, no. 1 (2023): 26–30. https://doi.org/10.5281/zenodo.7789306.

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<em>Due to the higher requirement for energy in recent times, the most important industry for power generation is the thermal power plant. Due to the higher requirement of heat transfer without any loss from one fluid to another fluid counter-flow heat exchangers play a very important role.  In past decades, many researchers attempted to find an effective way to increase the transfer rate from one fluid to another. In this study, we are more focused toward increase the heat transfer rate in the counter-flow heat exchanger (CFHX). In addition, the summary is provided information related to

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20

Ajeeb, Wagd, Monica S. A. Oliveira, Nelson Martins, and S. M. Sohel Murshed. "Numerical approach for fluids flow and thermal convection in microchannels." Journal of Physics: Conference Series 2116, no. 1 (2021): 012049. http://dx.doi.org/10.1088/1742-6596/2116/1/012049.

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Abstract The heat transfer performance of conventional thermal fluids in microchannels is an attractive method for cooling devices such as microelectronic applications. Computational fluid dynamics (CFD) is a very significant research technique in heat transfer studies and validated numerical models of microscale thermal management systems are of utmost importance. In this paper, some literature studies on available numerical and experimental models for single-phase and Newtonian fluids are reviewed and methods to tackle laminar fluid flow through a microchannel are sought. A few case studies

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21

Chowdhury, Manojit, Ankita Banerjee, Rahul Das, Shrilekha Das, and Kamlesh Prasad. "Influence of Temperature and Mass Flow Rate on Heat Transfer Characteristics in Parallel Flow Corrugated Plate Heat Exchanger." Journal of Agricultural Engineering (India) 62, no. 1 (2025): 120–34. https://doi.org/10.52151/jae2025621.1917.

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Efficient heat exchangers (HEs) are essential components in various industrial processes, enabling transfer of thermal energy between fluids. Current research investigated heat transfer and fluid flow characteristics of a corrugated surface type parallel flow plate heat exchanger (PHE) with water as a heat transfer fluid. The study aims to enhance our understanding of how these operational parameters impact heat transfer performance and provide insights into optimizing the design and operation of such HEs for improved energy efficiency. The performance of HE was evaluated at variable temperatu

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22

Gul, Taza, and Zaitoon Khan. "Thin film Maxwell-Power Law Fluid Flow on an extending surface." City University International Journal of Computational Analysis 6, no. 1 (2023): 1–10. http://dx.doi.org/10.33959/cuijca.v6i1.68.

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In this research article, the examination is done on film flow of two-dimensional fluid along with transfer of heat in a magnetic field on an unsteady extending sheet. To gain the appropriate outputs for the flow efficiency and rate of transfer of heat, the Power law fluids are mixed with the viscoelastic fluids which reduce the viscosity of the fluids. The heat transfer rate is further improved with the inclusion of nanoparticles. The flow and heat transmission characteristics of a Maxwell, Power-law-model-fluid along with Joule absorption and changeable liquid sheet thickness are examined. T

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23

Shang, Fu Min, Jian Hong Liu, and Deng Ying Liu. "Experimental Investigation on the Heat Transfer Characteristics of Nanofluids in Self-Exciting Mode Oscillating-Flow Heat Pipe." Advanced Materials Research 396-398 (November 2011): 250–54. http://dx.doi.org/10.4028/www.scientific.net/amr.396-398.250.

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The objective of this article is to provide the heat transfer characteristics of Cu-H2O nanofluids in self-exciting mode oscillating-flow heat pipe under different laser heating input, and to compare with the heat transfer characteristics of the same heat pipe with distilled water as working fluids. In this paper, the peculiarity of heat transfer rate of the SEMOS heat pipe with Cu-H2O fluid has been experimentally confirmed by changing the proportion of working fluid and Cu nanoscale particles in the heat pipe. As the results, it has been confirmed that the parameter of filling rate of workin

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24

Kumar Gaur, Rohit, Dr Shashi Kumar Jain, and Dr Sukul Lomash. "Experimental Investigation on Triple Concentric Tube Heat Exchanger with Helical Baffles." SMART MOVES JOURNAL IJOSCIENCE 6, no. 11 (2020): 14–20. http://dx.doi.org/10.24113/ijoscience.v6i11.324.

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A heat exchanger is a device used to transfer thermal energy between two or more liquids, between a solid surface and a liquid, or between solid particles and a liquid at different temperatures and in thermal contact where shell and tube heat exchangers contain a large number of tubes packed in a jacket whose axes are parallel to those of the shell. Heat transfer occurs when one fluid flows into the pipes while the other flows out of the pipes through the jacket. In industry, three-tube heat exchanger tubes are used as condensers, evaporators, sub cooler, heat recovery heat exchangers, etc. Th

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25

Pasupuleti, Ravindra Kumar, Manindra Bedhapudi, Subba Reddy Jonnala, and Appa Rao Kandimalla. "Computational Analysis of Conventional and Helical Finned Shell and Tube Heat Exchanger Using ANSYS-CFD." International Journal of Heat and Technology 39, no. 6 (2021): 1755–62. http://dx.doi.org/10.18280/ijht.390608.

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The summary of the proposed work is to compare the rate of heat transfer, logarithmic mean temperature difference (LMTD) and effectiveness (ε) for a conventional shell and tube heat exchanger with and without helical finned surfaces on tube side of heat exchanger. It is shown that the inlet velocity of cold fluid at the tube side varies, while the inlet velocity of hot fluid at the shell side remains constant. The percentage variations of heat transfer rates with theoretical and simulation methods are compared. The geometry is modelled in ANSYS design modeler and analysis have been carried out

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26

Tama Dida Efendi, Hilbran, Budi Kristiawan, Koji Enoki, Agung Tri Wijayanta, and Syamsul Hadi. "Enhancing Heat Transfer Performance: Nanofluids Application in Helical Microfin Tube Concentric Heat Exchangers." E3S Web of Conferences 465 (2023): 01019. http://dx.doi.org/10.1051/e3sconf/202346501019.

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This manuscript explores the application of nanofluids in helical microfin tube concentric heat exchangers and investigates the potential for improved heat transfer performance. Helical microfin tubes offer enhanced heat transfer characteristics due to increased surface area and improved fluid mixing. When combined with nanofluids, which are base fluids with suspended nanoparticles, the thermal conductivity and convective heat transfer properties can be further enhanced. The objective of this present work is to investigate experimentally on heat transfer enhancement Al2O3/distilled water (0.05

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27

Muhammad Hazeer Khiralsaleh Mohamad Rohaizan, Nor Azwadi Che Sidik, and Kamyar Shameli. "Numerical Analysis of Heat Transfer in Microchannel Heat Transfer in Microchannel Heat Sink using Flow Disruption." Journal of Advanced Research Design 106, no. 1 (2024): 1–14. http://dx.doi.org/10.37934/ard.106.1.114.

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Microchannel heat sink is a passive heat exchanger that transfers the heat generated by an electronic or a mechanical device to a fluid medium, often a liquid coolant, where it is dissipated away from the device, thereby allowing regulation of the device's temperature at optimum levels. It is widely used in computers that are used to cool central processing units or graphic processors. In order to achieve great heat transfer performance of microchannel heat sink, passive method are used in this research particularly the flow disruption and secondary channel. A three-dimensional computational f

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28

Kumar, Shailesh Ranjan, and Satyendra Singh. "Experimental Study on Microchannel with Addition of Microinserts Aiming Heat Transfer Performance Improvement." Water 14, no. 20 (2022): 3291. http://dx.doi.org/10.3390/w14203291.

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Microchannel technology rapidly established itself as a practicable solution to the problem of the removal of extremely concentrated heat generation in present-day cooling fields. By implementing a better design structure, altering the working fluids and flow conditions, using various materials for fabrication, etc., it is possible to increase the heat transfer performance of microchannels. Two parameters that affect how well a microchannel transfers heat were only recently coupled, and the complicated coupling of the parameter that affects how well a microchannel sink transfers heat is still

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29

Gopal, Arumugam, Prabhakaran Duraisamy, and Thirumarimurugan Marimuthu. "Experimental Investigation on Heat Transfer and Pressure Drop Characteristics of Food Additive in Dimple Plate Heat Exchanger." Revista de Chimie 73, no. 3 (2022): 97–109. http://dx.doi.org/10.37358/rc.22.3.8539.

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The present study attempts to examine the heat transfer and pressure drop aspects of a 11-channel dimple plate heat exchanger with hot water as the hot fluid and sodium benzoate (food preservative) as the cold fluid. The outcome of the mass flow rate of hot and cold fluids on the convective heat transfer coefficient and overall heat transfer coefficient were investigated. Furthermore, the effect of Reynolds number on the pressure drop and the Nusselt number were observed. The experimental results demonstrated that when the mass flow rate of the cold fluid increases, so does the overall heat tr

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Kumar, Shailesh Ranjan, and Satyendra Singh. "Numerical Analysis for Augmentation of Thermal Performance of Single-Phase Flow in Microchannel Heat Sink of Different Sizes with or without Micro-Inserts." Fluids 7, no. 5 (2022): 149. http://dx.doi.org/10.3390/fluids7050149.

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With the development of miniaturized and enormous heat density generating novel technologies, the microchannel heat sink is rapidly establishing itself in modern cooling fields. Enhancement of heat transfer performance of microchannels is done by incorporating improved design structure, changing working fluids and flow conditions, using different materials for fabrication, etc. Coupling of two parameters influencing heat transfer performance of microchannels is in a nascent age, and complex coupling of heat transfer influencing parameters of microchannel sinks has not been clearly understood y

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31

Walsh, Christian, Rana Ronak, Rathod Hiren, Patel Dhiraj, and Patel Atul. "A Case Study on Basic of Heat Exchanger." Research and Applications of Thermal Engineering 6, no. 3 (2023): 31–36. https://doi.org/10.5281/zenodo.10319184.

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<i>Equipment that exchanges or transfers heat energy for various uses is called a heat exchanger. Heat exchangers are essential in the industrial sector because they recover heat between two process fluids. The most popular heat transfer devices are plate heat exchangers, shell and tube heat exchangers, and concentric tube (double pipe).The study of fluid flow and heat conduction by computer numerical calculation and graphical display is known as computational fluid dynamics, or CFD. The fu

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32

Rajeh, Taha, Ping Tu, Hua Lin, and Houlei Zhang. "Thermo-Fluid Characteristics of High Temperature Molten Salt Flowing in Single-Leaf Type Hollow Paddles." Entropy 20, no. 8 (2018): 581. http://dx.doi.org/10.3390/e20080581.

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A single-leaf type paddle heat exchanger with molten salt as the working fluid is a proper option in high temperature heating processes of materials. In this paper, based on computational fluid dynamics (CFD) simulations, we present the thermo-fluid characteristics of high temperature molten salt flowing in single-leaf type hollow paddles in the view of both the first law and the second law of thermodynamics. The results show that the heat transfer rate of the hollow paddles is significantly greater than that of solid paddles. The penalty of the heat transfer enhancement is additional pressure

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33

Naghavi, M. R., M. A. Akhavan-Behabadi, and M. Fakoor Pakdaman. "Experimental Investigation on Heat Transfer and Pressure Drop of CNT-Base Oil Nano-Fluid Flow in Rectangular Channels under Constant Wall Temperature." Advanced Materials Research 622-623 (December 2012): 806–10. http://dx.doi.org/10.4028/www.scientific.net/amr.622-623.806.

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An experimental investigation has been carried out to study the heat transfer and pressure drop characteristics of MWCNT-Base oil nano-fluid flow inside horizontal rectangular channels under constant wall temperature. The temperature of the tube wall was kept constant at around 95 °C to have isothermal boundary condition. The required data were acquired for laminar fully developed flow inside round and rectangular channels. The effect of different parameters such as mass velocity, aspect ratio of rectangular channels and nano-particles concentration on heat transfer coefficient and pressure dr

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34

Fitrianto, Taufik Ramadhan, and Suhanan. "Simulation of performance enhancement of heat exchanger with twisted tapes using ANSYS software." Jurnal Teknik Mesin Indonesia 18, no. 2 (2023): 119–24. http://dx.doi.org/10.36289/jtmi.v18i2.454.

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Heat transfer effectiveness in a heat exchanger depends on the fluid flow through the exchanger. The heat transfer coefficient is directly proportional to the Nusselt number of the fluid flow. A higher Nusselt number indicates a greater heat transfer rate. The enhancement of heat transfer quality can be achieved by increasing the surface area for heat transfer, disrupting the boundary layer, and inducing swirl flow in the fluid. Twisted tape inserts are used in the heat exchanger to induce swirl flow. In this simulation, six types of inserts with a length of 2000 mm, width of 35 mm, and twist

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35

Garai, Anirban, Jan Kleissl, and Sutanu Sarkar. "Flow and heat transfer in convectively unstable turbulent channel flow with solid-wall heat conduction." Journal of Fluid Mechanics 757 (September 19, 2014): 57–81. http://dx.doi.org/10.1017/jfm.2014.479.

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AbstractMost turbulent coherent structures in a convectively unstable atmospheric boundary layer are caused by or manifested in ascending warm fluid and descending cold fluids. These structures not only cause ramps in the air temperature timeseries, but also imprint on the underlying solid surface as surface temperature fluctuations. The coupled flow and heat transport mechanism was examined through direct numerical simulation (DNS) of a channel flow allowing for realistic solid–fluid thermal coupling. The thermal activity ratio (TAR; the ratio of thermal inertias of fluid and solid), and the

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36

V, Anitha. "Flow and Heat Transfer in a Non-Newtonian Dusty Fluid with Particle Suspension." International Journal of Science and Research (IJSR) 6, no. 6 (2017): 2854–64. http://dx.doi.org/10.21275/es231230110133.

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37

Corzo, Santiago Francisco, Damian Enrique Ramajo, and Norberto Marcelo Nigro. "High-Rayleigh heat transfer flow." International Journal of Numerical Methods for Heat & Fluid Flow 27, no. 9 (2017): 1928–54. http://dx.doi.org/10.1108/hff-05-2016-0176.

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Purpose The purpose of this paper is to assess the Boussinesq approach for a wide range of Ra (10 × 6 to 10 × 11) in two-dimensional (square cavity) and three-dimensional (cubic cavity) problems for air- and liquid-filled domains. Design/methodology/approach The thermal behavior in “differentially heated cavities” filled with air (low and medium Rayleigh) and water (high Rayleigh) is solved using computational fluid dynamics (CFDs) (OpenFOAM) with a non-compressible (Boussinesq) and compressible approach (real water properties from the IAPWS database). Findings The results from the wide range

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38

Lu, Qun Hui, Yang Yan Zheng, and Biao Yuan. "A Simulative Study on the Impact of Physical Property Parametersupon Flow and Heat Transfer in Annular Space." Advanced Materials Research 516-517 (May 2012): 858–65. http://dx.doi.org/10.4028/www.scientific.net/amr.516-517.858.

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Through finite volume method, this study establishes a steady state flow and heat transfer model of a single phase flow flowing vertically upward in annular space. The model sets the inner cylinder of the annular space as a heating body with fixed heat generation rate. Flow and heat transfer boundary layers are set between the flow and the inner cylinder wall, in order to give more accurate description of momentum and heat coupling and transfer processes between the fluid and the solid near the wall. Compared with the constant physical property model, the variable physical property model, in w

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Saboya, F. E. M., and C. E. S. M. da Costa. "Minimum Irreversibility Criteria for Heat Exchanger Configurations." Journal of Energy Resources Technology 121, no. 4 (1999): 241–46. http://dx.doi.org/10.1115/1.2795989.

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From the second law of thermodynamics, the concepts of irreversibility, entropy generation, and availability are applied to counterflow, parallel-flow, and cross-flow heat exchangers. In the case of the Cross-flow configuration, there are four types of heat exchangers: I) both fluids unmixed, 2) both fluids mixed, 3) fluid of maximum heat capacity rate mixed and the other unmixed, 4) fluid of minimum heat capacity rate mixed and the other unmixed. In the analysis, the heat exchangers are assumed to have a negligible pressure drop irreversibility. The Counterflow heat exchanger is compared with

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M, Vijayakumar, and Mahendra G. "Experimental Investigation of Heat Transfer Characteristics of Automobile Radiator using Tio2 Nanofluid Coolant." International Journal for Research in Applied Science and Engineering Technology 10, no. 4 (2022): 209–14. http://dx.doi.org/10.22214/ijraset.2022.41171.

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Abstract: The use of nanoparticle dispersed coolants in automobile radiators improves the heat transfer rate and facilitates overall reduction in size of the radiators. In this study, the heat transfer characteristics of water/propylene glycol based TiO2nanofluid was analyzed experimentally and compared with pure water and water/propylene glycol mixture. Two different concentrations of nano fluids were prepared by adding 0.1 vol. %, 0.2 vol. %, 0.3 vol. % and 0.4 vol. % of TiO2 nanoparticles into water/propylene glycol mixture (60:40). The experiments were conducted by varying the coolant flow

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Ningsih, Erlinda, Isa Albanna, Aita Pudji Witari, and Gistanya Lindar Anggraini. "PERFORMANCE SIMULATION ON THE SHELL AND TUBE OF HEAT EXCHANGER BY ASPEN HYSYS V.10." Jurnal Rekayasa Mesin 13, no. 3 (2022): 701–6. http://dx.doi.org/10.21776/jrm.v13i3.1078.

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Heat exchanger type shell and tube, which is the most commonly used heat exchanger in various industries. The efficiency of heat exchangers can be seen from their performance to affect its economy from a process. The purpose is to determine the influence of the hot fluid flow rate and the cold fluid on the overall heat transfer coefficient (U) and log mean temperature difference (ΔTLMTD) values. This simulation is done using Aspen HYSYS V.10 applications and obtained data of the total heat transfer coefficient (U) and ΔTLMTD values. The heat exchanger shell and tube used type 1-2 with single s

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Hartnett, J. P. "1990 Max Jakob Memorial Award Lecture: Viscoelastic Fluids: A New Challenge in Heat Transfer." Journal of Heat Transfer 114, no. 2 (1992): 296–303. http://dx.doi.org/10.1115/1.2911275.

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A review of the current knowledge on the fluid mechanics and heat transfer behavior of viscoelastic aqueous polymer solutions in channel flow is presented. Both turbulent and laminar flow conditions are considered. Although the major emphasis is on fully established circular pipe flow, some results are also reported for flow in a 2:1 rectangular channel. For fully established turbulent channel flow, it was found that the friction factor, f, and the dimensionless heat transfer factor, jH, were functions of the Reynolds number and a dimensionless elasticity value, the Weissenberg number. For Wei

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Wang, Zhenyu, Jie Wang, Ma Yunhai, and Lining Wang. "Structural optimization design and heat transfer characteristics of multi-degree-of-freedom spiral plate type agricultural machinery equipment heat exchanger." Thermal Science 23, no. 5 Part A (2019): 2525–33. http://dx.doi.org/10.2298/tsci181115140w.

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In agricultural equipment, heat exchangers are mainly used for heat exchange and full utilization. Based on the theory of enhanced heat transfer, we establish a reasonable mathematical model and physical model for the multi-degree-of-freedom spiral plate type agricultural machinery heat exchanger, and use the FLUENT numerical simulation software to add the spiral disturbing fluid to the spiral plate heat exchanger flow channel. Numerical simulation and further optimization simulation of the fluid-conducting conditions with poor heat transfer effect were carried out, and an optimal arrangement

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Rekha, Maaliger B., Ioannis E. Sarris, Javali K. Madhukesh, Kondethimmanahalli R. Raghunatha, and Ballajja C. Prasannakumara. "Activation Energy Impact on Flow of AA7072-AA7075/Water-Based Hybrid Nanofluid through a Cone, Wedge and Plate." Micromachines 13, no. 2 (2022): 302. http://dx.doi.org/10.3390/mi13020302.

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The present research investigates the effect of a heat source/sink on nanofluid flow through a cone, wedge, and plate when using a suspension of aluminium alloys (AA7072 and AA7075) as nanoparticles in base fluid water. The activation energy and porous material are also considered in the modelling. Using similarity transformations, the modelling equations were converted into an ordinary differential equation (ODEs) system. The Runge Kutta Fehlberg 45 fourth fifth-order (RKF 45) technique and shooting approach were used to numerically solve these equations. The influence of essential aspects on

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Siddiqui, Abdul, Muhammad Zeb, Tahira Haroon, and Qurat-ul-Ain Azim. "Exact Solution for the Heat Transfer of Two Immiscible PTT Fluids Flowing in Concentric Layers through a Pipe." Mathematics 7, no. 1 (2019): 81. http://dx.doi.org/10.3390/math7010081.

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This article investigates the heat transfer flow of two layers of Phan-Thien-Tanner (PTT) fluids though a cylindrical pipe. The flow is assumed to be steady, incompressible, and stable and the fluid layers do not mix with each other. The fluid flow and heat transfer equations are modeled using the linear PTT fluid model. Exact solutions for the velocity, flow rates, temperature profiles, and stress distributions are obtained. It has also been shown that one can recover the Newtonian fluid results from the obtained results by putting the non-Newtonian parameters to zero. These results match wit

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Jaworski, Artur J. "Special Issue “Fluid Flow and Heat Transfer”." Energies 12, no. 16 (2019): 3044. http://dx.doi.org/10.3390/en12163044.

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Mohiuddin Mala, G., Dongqing Li, and J. D. Dale. "Heat transfer and fluid flow in microchannels." International Journal of Heat and Mass Transfer 40, no. 13 (1997): 3079–88. http://dx.doi.org/10.1016/s0017-9310(96)00356-0.

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Kryuchkov, I. I., and R. R. Ionaitis. "Heat transfer accompanying a falling fluid flow." Soviet Atomic Energy 66, no. 1 (1989): 20–26. http://dx.doi.org/10.1007/bf01121067.

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Ario Geraldi and RR. Sri Poernomo Sari. "EFFECTS PARTICLES CONCENTRATION OF Al2O3 AND TiO2 TO CONVECTION COEFFICIENT ON DOUBLE PIPE HEAT EXCHANGER." Jurnal Ilmiah Teknik 1, no. 1 (2022): 01–08. http://dx.doi.org/10.56127/juit.v1i1.66.

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Heat exchanger is a device used to transfer heat energy from a fluid to in another fluid. Each fluid has different characteristics. Value of convection heat transfer is determined by the value of the convection heat transfer coefficient (h) which depends on the dimensions and flow conditions. The fluid with the additional of Al2O3 nanoparticles (aluminum oxide) and TiO2 (Titanium dioxide) has great potential for cooling applications. The purpose of this study was to analyze the effect of Al2O3 and TiO2 particle concentration on the value of the convection heat transfer coefficient in the doubl

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KIMURA, Fumiyoshi, and Kenzo KITAMURA. "A304 FLUID FLOW AND HEAT TRANSFER OF NATURAL CONVECTION ADJACENT TO UPWARD-FACING, INCLINED, HEATED PLATE : AIR CASE(Heat Transfer-1)." Proceedings of the International Conference on Power Engineering (ICOPE) 2009.3 (2009): _3–19_—_3–24_. http://dx.doi.org/10.1299/jsmeicope.2009.3._3-19_.

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