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Journal articles on the topic 'Wind tunnel'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Andreas, Edgar L., and Larry Mahrt. "On the Prospects for Observing Spray-Mediated Air–Sea Transfer in Wind–Water Tunnels." Journal of the Atmospheric Sciences 73, no. 1 (2015): 185–98. http://dx.doi.org/10.1175/jas-d-15-0083.1.

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Abstract Nature is wild, unconstrained, and often dangerous. In particular, studying air–sea interaction in winds typical of tropical cyclones can place researchers, their instruments, and even their research platforms in jeopardy. As an alternative, laboratory wind–water tunnels can probe 10-m equivalent winds of hurricane strength under conditions that are well constrained and place no personnel or equipment at risk. Wind–water tunnels, however, cannot simulate all aspects of air–sea interaction in high winds. The authors use here the comprehensive data from the Air–Sea Interaction Salt Wate

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2

Liu, Jie, Yimeng Wu, Zhanyou Sa, et al. "Study on the influence of cross-section shape on the characteristics of wind flow field in heavy-daty railway tunnel." E3S Web of Conferences 536 (2024): 01024. http://dx.doi.org/10.1051/e3sconf/202453601024.

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In order to reduce the coal dust pollution when the heavy train enters the tunnel and to ensure the safety of railroad operation, this paper adopts numerical simulation to study the characteristics of the wind flow field of the heavy train passing through different shapes of tunnels. The results show that the shape of the tunnel section has a significant effect on the piston wind characteristics of the train entering the tunnel. When the train passes through the tunnel, the value of the wind pressure and the gradient of the pressure on the surface of the carriages increase from horseshoe shape

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3

Yao, Yahu. "Numerical Simulation Analysis of the Influence of Entrance Wind Speed on the Wind Speed Distribution of Coal Mine Tunnel Sections." Academic Journal of Science and Technology 7, no. 3 (2023): 208–12. http://dx.doi.org/10.54097/ajst.v7i3.13399.

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In order to further accurately obtain the wind speed of coal mine tunnels and achieve intelligent ventilation, taking the Wuhushan coal mine tunnel as the research object, the COMSOL Multiphysics numerical simulation software was used to simulate and analyze the influence of inlet wind speed on the wind speed distribution on the tunnel section, and the wind speed distribution law of the semi circular arch tunnel section under different inlet wind speed conditions was obtained. The research results indicate that the wind speed contour is basically parallel to the tunnel wall, and the wind speed

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4

Hasan, Mohammed Munif, and Shabudin Mat. "Data Reduction Analysis on UTM-LST External Balance." International Journal for Research in Applied Science and Engineering Technology 10, no. 10 (2022): 952–59. http://dx.doi.org/10.22214/ijraset.2022.47097.

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Abstract: The effective use of wind-tunnel testing in determining aerodynamic properties of a body is very much dependent upon the reliability and speed with which wind-tunnel data can be reduced. The operating efficiency of the wind tunnels is substantially improved by the capability of providing lower aerodynamic coefficients in real time, or online, which decreases the expensive wind-tunnel time necessary for each test. This paper describes a system for presenting reduced wind-tunnel data in real time for UTM-LST. The requirements for data-handling equipment and data reduction procedures fo

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Ma, Xiaojun, Yu Zhao, Xueying Wen, and Jiujiu Chen. "Accessibility Study of a Compact Wind Tunnel with an Unequal Spacing Grid for the Outdoor Wind Environment." Buildings 12, no. 12 (2022): 2188. http://dx.doi.org/10.3390/buildings12122188.

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One of the key issues in architectural design and regional planning is to create a safe and comfortable outdoor building environment, which calls for more studies. Wind tunnel experiments and computational fluid dynamic (CFD) simulations are the primary methods for the current studies. The airflow and boundary conditions are controllable for the wind tunnel experiment, and the data is reliable. In most wind tunnel platforms, spires and roughness elements are applied to create the gradient wind of the atmospheric boundary layer, leading to the oversized, high construction cost, and complex oper

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Allan, M. R., K. J. Badcock, G. N. Barakos, and B. E. Richards. "Wind-tunnel interference effects on a 70° delta wing." Aeronautical Journal 108, no. 1088 (2004): 505–13. http://dx.doi.org/10.1017/s0001924000000336.

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Abstract This paper considers the effects of both wind-tunnel walls and a downstream support structure, on the aerodynamics of a 70° delta wing. A RANS model of the flow was used with the wind-tunnel walls and supports being modelled with inviscid wall boundary conditions. A consistent discretisation of the domain was employed such that grid dependence effects were consistent in all solutions, thus any differences occurring were due to varying boundary conditions (wall and support locations). Comparing solutions from wind-tunnel simulations and simulations with farfield conditions, it has been

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7

Zhang, Ying Chao, Wei Ding, Zhe Zhang, and Jie Li. "Comparison Research on Aerodynamic Drags and Pressure Coefficients of Reference Car Models in Automotive Wind Tunnel." Advanced Materials Research 989-994 (July 2014): 2834–38. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.2834.

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The aerodynamic drags of different reference car models were investigated to calibrate the performance of the Automotive Wind Tunnel in Jilin University. The two kinds of reference models--MIRA and SAE reference car models were involved in this paper, considering the actual situation of the Automotive Wind Tunnel in Jilin University. The results of the research show that the Automotive Wind Tunnel in Jilin University can meet the demand for automotive wind tunnel tests and it can get the same performances as other wind tunnels have and reliable test data can be obtained in it.

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8

Flaga, Andrzej, and Łukasz Flaga. "Research capabilities of the four wind tunnels of the Wind Engineering Laboratory of Cracow University of Technology." Inżynieria i Budownictwo LXXXI, no. 2 (2025): 99–105. https://doi.org/10.5604/01.3001.0055.0912.

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Wind Engineering Laboratory of the Cracow University of Technology (WEL CUT) is a unique and appreciated internationally research and teaching unit in Poland. WEL CUT specializes in research in building aerodynamics, snow engineering, wind power and environmental engineering. The new structure of WEL CUT consists of four wind tunnels: tunnel TA1 – simulation of boundary layer, research on building aerodynamics, wind energy, sport; tunnel TA2 – simulation of climatic conditions, including rainfall, drizzle, artificial snow, and icing; tunnel TA3 – calibration of measuring equipment and wind flo

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9

Wang, Fei, Xingsen He, Lin Xu, Shengzhong Zhao, and Miaocheng Weng. "Train-Induced Unsteady Airflow in a Metro Tunnel with a Ventilation Shaft." Applied Sciences 14, no. 20 (2024): 9177. http://dx.doi.org/10.3390/app14209177.

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To ensure only one train operates in each ventilation section within an extra-long tunnel, a ventilation shaft was typically installed to divide the entire tunnel into multiple sections. Given the crucial role of piston wind in the metro tunnel environment and ventilation, a deeper understanding of train-induced unsteady airflow in a metro tunnel with a ventilation shaft is desirable. This study uses the unsteady flow theory of the Bernoulli equation to mathematically model piston wind in metro tunnels both with and without ventilation shafts. The influence of various shaft parameters on pisto

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10

Flamand, Olivier, Philippe Delpech, Pierre Palier, and Jean-Paul Bouchet. "Benefit of Wind Tunnels with Large Test Sections for Wind Engineering Applications." Mathematical Modelling in Civil Engineering 15, no. 2 (2019): 14–19. http://dx.doi.org/10.2478/mmce-2019-0005.

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Abstract Atmospheric Boundary layer wind tunnels (ABLWT) dedicated to building safety and comfort have been operated by CSTB in Nantes since 1971. Because ABLWT only deal with reduced scale models of real structures, the necessity of a larger wind tunnel, the Jules Verne Climatic wind tunnel (CWT), able to reproduce extreme wind loads on real scale structures arose in the years 80. Hence, it became a major European facility operating for improvement of the safety, quality and environmental impact of buildings and civil engineering works as well as products from industrial fields (transportatio

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11

NISHIMURA, Hiroaki. "Wind Tunnel Experiment and Wind Tunnel Test." Wind Engineers, JAWE 39, no. 4 (2014): 333–34. http://dx.doi.org/10.5359/jawe.39.333.

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12

Tabatabaei, Narges, Ramis Örlü, Ricardo Vinuesa, and Philipp Schlatter. "Aerodynamic Free-Flight Conditions in Wind Tunnel Modelling through Reduced-Order Wall Inserts." Fluids 6, no. 8 (2021): 265. http://dx.doi.org/10.3390/fluids6080265.

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Parallel sidewalls are the standard bounding walls in wind tunnels when making a wind tunnel model for free-flight condition. The consequence of confinement in wind tunnel tests, known as wall-interference, is one of the main sources of uncertainty in experimental aerodynamics, limiting the realizability of free-flight conditions. Although this has been an issue when designing transonic wind tunnels and/or in cases with large blockage ratios, even subsonic wind tunnels at low-blockage-ratios might require wall corrections if a good representation of free-flight conditions is intended. In order

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13

Stalker, R. J. "Modern developments in hypersonic wind tunnels." Aeronautical Journal 110, no. 1103 (2006): 21–39. http://dx.doi.org/10.1017/s0001924000004346.

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AbstractThe development of new methods of producing hypersonic wind-tunnel flows at increasing velocities during the last few decades is reviewed with attention to airbreathing propulsion, hypervelocity aerodynamics and superorbital aerodynamics. The role of chemical reactions in these flows leads to use of a binary scaling simulation parameter, which can be related to the Reynolds number, and which demands that smaller wind tunnels require higher reservoir pressure levels for simulation of flight phenomena. The use of combustion heated vitiated wind tunnels for propulsive research is discusse

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14

Shahidin, Haziq Idraki, Mohd Rosdzimin Abdul Rahman, Azam Che Idris, and Mohd Rashdan Saad. "3D Printed Models vs Conventional Models: Comparison of Aerodynamic Performance for Wind Tunnel Experiments." Jurnal Kejuruteraan si4, no. 2 (2021): 101–4. http://dx.doi.org/10.17576/jkukm-2021-si4(2)-15.

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Traditionally, wind tunnel models are made of metal and the processes are very expensive. Since then, many researchers have been looking for new alternatives, hence 3D printing technology is the solution. Under right test conditions, 3D printed parts could be tested in a wind tunnel to get the aerodynamic performances. By using 3D printing technology, the cost and time can be significantly reduced to produce the wind tunnel models. This investigation was done to compare the aerodynamic performances which are drag and lift forces of the existing wind tunnel metal models with 3D printed wind tun

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15

CHEN, Dan, Zhong WANG, Xiang LU, Chenlong LIN, and Haitao PEI. "The control system design and study for continuous supersonic wind tunnel." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 40, no. 1 (2022): 167–74. http://dx.doi.org/10.1051/jnwpu/20224010167.

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As the first continuous supersonic wind tunnel in China, Mach number and total pressure are the most important flow field parameters of the wind tunnel, how to precise control and rapid and stable adjustment of total pressure and Mach number is the key in the design and construction of the wind tunnel control system. By analyzing the principle of parameter control of the wind tunnel flow field and the coupling relationship of each adjustment methods, the construction of continuous supersonic wind tunnel control system is constructed, and the solution measure of each key technical problem is gi

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16

Vuković, Đorđe, and Dijana Damljanović. "A technique for reducing supersonic transient loads on internal wind tunnel balances." Tehnika 79, no. 2 (2024): 177–84. http://dx.doi.org/10.5937/tehnika2402177v.

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Design of slender supersonic missiles requires a comprehensive experimental support in the form of wind tunnel data for a wide range of flight parameters (angle of attack and Mach number). However, in supersonic wind tunnel testing, the problem exists of transient loads at the times of the starting and stopping of the supersonic flow. In the environments of pronounced transient loads, characteristic of blowdowin wind tunnels like the T-38 of the Military technical Institute in Belgrade, it is necessary to provide control of the use of internal wind tunnel balances in the permitted design load

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17

Ni, Yangqin, Mingnian Wang, Zhenghui Ge, et al. "Prediction Method of Tunnel Natural Wind Based on Open-Source Meteorological Parameters." Processes 11, no. 1 (2023): 224. http://dx.doi.org/10.3390/pr11010224.

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The rational use of natural wind in extra-long tunnels for feedforward operation ventilation control can dramatically reduce tunnel operation costs. However, traditional tunnel natural wind calculation theory lacks a prediction function. This paper proposes a three-stage tunnel natural wind prediction method relying on the Yanglin Tunnel in Yunnan, China based on the massive meteorological parameters provided by the open-source national meteorological stations around the tunnel, which make up for the partial deficiency of the meteorological parameters of the tunnel portal. The multi-layer perc

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18

Bak, Christian, Anders S. Olsen, Andreas Fischer, et al. "Wind tunnel benchmark tests of airfoils." Journal of Physics: Conference Series 2265, no. 2 (2022): 022097. http://dx.doi.org/10.1088/1742-6596/2265/2/022097.

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Abstract This paper describes a benchmark of four airfoils in the Poul la Cour Tunnel (PLCT). The wind tunnel, the corrections used and the method of making adapters for the airfoils are also described. Very good agreement was in general observed between the measurements in PLCT and in other high quality wind tunnels. Some deviations were seen, but they were mainly attributed to the differences in separation on the airfoil. Apart from the benchmarking, this paper also highlights the challenges in testing airfoils in general such as obtaining 2D flow on thick airfoils that inherently shows sepa

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19

Arif Pratama, Riza, Muhammad Ikhsan, Dhimas Wicaksono, M. Safiq Rieza, and Munir Zainal Abidin. "Analisis Intensitas Turbulensi Terhadap Kestabilan Kecepatan Angin Test Section pada Struktur Wind Tunnel." Infotekmesin 16, no. 1 (2025): 269–75. https://doi.org/10.35970/infotekmesin.v16i1.2511.

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Wind tunnels in aerodynamic testing always have very large sizes to avoid high turbulence intensity. Turbulence intensity analysis is used to determine the size of a smaller wind tunnel to be more efficient in limited space. The use of epoxy fiber resin material is because lighter than aluminum with a thickness of 5mm. The purpose of the study was to produce a wind tunnel with a small size with low turbulence intensity and minimize large manufacture costs. The method used is constructive to analyze the wind tunnel design in determining the maximum wind flow speed at test section does not excee

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20

Tan, Yinjun, Keli Wang, Zhiqiang Zhang, Zeyi Lu, and Heng Zhang. "Study on the Effect of Natural Wind on the Smoke Spread Law of Extra-Long Tunnel Fires with Inclined Shafts for Air Supply and Exhaust." Buildings 14, no. 6 (2024): 1516. http://dx.doi.org/10.3390/buildings14061516.

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High-temperature smoke generated by tunnel fires is the most important factor causing casualties. To explore the influence of natural wind on fire smoke movement in an extra-long highway tunnel based on the Taihang Mountain Tunnel, the distribution law of natural wind in the tunnel was obtained by on-site monitoring of the meteorological conditions at the tunnel site. A three-dimensional fire dynamics tunnel model considering an inclined shaft smoke exhaust was established, and the influence of natural wind on tunnel temperature distribution, smoke spread and smoke exhaust efficiency was studi

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21

Du, Longhuan, Arganthaël Berson, and Robert G. Dominy. "Aerofoil behaviour at high angles of attack and at Reynolds numbers appropriate for small wind turbines." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 229, no. 11 (2014): 2007–22. http://dx.doi.org/10.1177/0954406214550016.

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The aerodynamic characteristics of a NACA0018 aerofoil have been investigated experimentally for incidence angles ranging from [Formula: see text] to [Formula: see text] in closed-jet and open-jet wind tunnels with different blockage coefficients at Reynolds numbers from 60,000 to 140,000. The results provide a comprehensive data set for studying the performance of typical, small-scale Darrieus wind turbine blades which mainly operate at relatively low Reynolds number and experience extreme angles of attack, particularly during start-up. Measurements in both very high and very low blockage, op

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Hasan, Inamul, R. Mukesh, P. Radha Krishnan, R. Srinath, Dhanya Prakash Babu, and Negash Lemma Gurmu. "Wind Tunnel Testing and Validation of Helicopter Rotor Blades Using Additive Manufacturing." Advances in Materials Science and Engineering 2022 (September 21, 2022): 1–13. http://dx.doi.org/10.1155/2022/4052208.

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This research paper aims to validate the aerodynamic performance of rotor blades using additive manufacturing techniques. Wind tunnel testing is a technique used to find the flow characteristics of the body. Computational fluid dynamics (CFD) techniques are used for aerodynamic analysis, and validation should be done using wind tunnel testing. In the aerodynamic testing of models, additive manufacturing techniques help in validating the results by making models easily for wind tunnels. Recent developments in additive manufacturing help in the aerodynamic testing of models in wind tunnels. The

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23

Kato, Satoshi. "Wind Tunnel." Journal of the Society of Mechanical Engineers 103, no. 985 (2000): 824–25. http://dx.doi.org/10.1299/jsmemag.103.985_824.

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SHIGEMI, Masashi. "Wind Tunnel." Journal of the Society of Mechanical Engineers 107, no. 1024 (2004): 168–69. http://dx.doi.org/10.1299/jsmemag.107.1024_168.

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Lara, Andrés, Jonathan Toledo, and Robert Paul Salazar Romero. "Characterization, Design Testing and Numerical Modeling of a Subsonic-Low Speed Wind Tunnel." Ingeniería 27, no. 1 (2022): e17973. http://dx.doi.org/10.14483/23448393.17973.

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Context: Wind tunnels are essential devices in the study of flow properties through objects and scaled prototypes. This work presents a numerical study to characterize an existing wind tunnel, proposing modifications with the aim to improve the quality of the flow in the test chamber. Method: Experimental measurements of the inlet velocity and pressure distribution of a wind tunnel are nperformed. These empirical values are used as parameters to define boundary conditions in simulations. The Finite Element Method (FEM) at low speeds is implemented to determine the stream function by using a st

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Huang, Weihao, Yan Tong, Gangyu Lv, Baolian Dai, and Tao Peng. "Dynamic evolutions of traffic wind influenced by ambient wind for urban road tunnel with shafts." E3S Web of Conferences 356 (2022): 02014. http://dx.doi.org/10.1051/e3sconf/202235602014.

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Urban road tunnels with shafts have been applied in some cities in China. Field measurements of Mofan Road Tunnel show that ambient wind is widespread and its influence on the ventilation efficiency of shaft is unclear. In this paper, the physical model of a three-lane 210 m (length) *12 m (width) *6 m (height) tunnel is studied, with three vehicles in each lane and a speed of 60 km/h. Three-dimensional CFD simulations on a 210 m long tunnel with double shafts is carried out by Fluent 6.3.26. Momentum equation and k-ε equation turbulence model are used for simulation analysis and dynamic grid

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Baker, Dirk V., and K. Beck George. "The Weed Tunnel: Building an Experimental Wind Tunnel." Weed Technology 22, no. 3 (2008): 549–52. http://dx.doi.org/10.1614/wt-07-162.1.

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Dispersal is a key component of plant population and community dynamics and the spread of weeds. Although many species of economic concern disperse via tumbleweed mechanisms, our ability to estimate relevant dispersal parameters can be hindered by the lack of a controlled environment that can be provided by a wind tunnel. Established wind tunnels are typically closed-circuit, clean systems and are therefore unsuitable for biological or ecological research. We designed and constructed a wind tunnel to estimate dispersal parameters for diffuse knapweed. Our design was a tunnel that utilizes the

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Orosa, José A., Enrique J. García-Bustelo, and Diego Vergara. "A New Procedure to Design an Open Circuit Blowing Subsonic Moist-Air Wind Tunnel." Applied Sciences 13, no. 19 (2023): 11021. http://dx.doi.org/10.3390/app131911021.

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The present research work shows how a functional subsonic moist-air wind tunnel has been designed. Although this type of wind tunnel has never been developed to date, it is particularly interesting to develop a satisfactory design of feasibility under moist air conditions. Low-speed vertical-axis wind turbines employ different kinds of rotors, such as Savonius, Darrieus, and H-rotor. All these wind turbines present clear advantages, e.g., the horizontal-axis wind turbines are omnidirectional. This means they can work under different wind directions, need lower maintenance, and begin working un

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Yu, Wenshan, Beichen Su, Zhengzhou Rao, Hengxin Pan, and Luping Zhao. "Genetic Algorithm-Based Mach Number Control of Multi-Mode Wind Tunnel Flow Fields." Processes 10, no. 10 (2022): 2038. http://dx.doi.org/10.3390/pr10102038.

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There are unfavorable conditions such as constantly changing working conditions and frequent disturbances that affect Mach number control in wind tunnel flow fields. As the proportional, integral and differential (PID) parameters need to be re-tuned for each working conditions of a wind tunnel, the operational costs of wind tunnels are very high. Therefore, to lower these costs, a genetic algorithm was utilized to tune the PID parameters to achieve Mach number control of a multi-mode wind tunnel flow field. In this paper, firstly, models for the multi-mode wind tunnel were established; secondl

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Hrúz, Michal, Pavol Pecho, and Martin Bugaj. "Design procedure and honeycomb screen implementation to the air transtport department’s subsonic wind tunnel." AEROjournal 16, no. 2 (2020): 3–8. http://dx.doi.org/10.26552/aer.c.2020.2.1.

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Wind tunnels are the most widely used tools when comes to validation of Reynold number. Most of wind tunnels use various air straighteners or flow conditioners to achieve as most unified air flow as it’s possible. This article deals with design and creation procedure of air flow straightener – honeycomb screen. Based on mathematical relations and empirical experience defines dimensions and characteristics for subsonic wind tunnel of the Air Transport Department of University of Žilina. Wind tunnel equipped with a suitable screen provides more relevant and accurate data, which are crucial for f

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Kok-Hoe Wong, Weldon Lai, Jing-Hong Ng, Ahmad Fazlizan, Kamaruzzaman Sopian, and Niranjan Sahoo. "Open-Loop Subsonic Suction Type Wind Tunnel: Design, Simulation, Build and Test." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 105, no. 2 (2023): 204. http://dx.doi.org/10.37934/arfmts.105.2.204223.

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The technological advancement in drones, unmanned aerial vehicles (UAV), wind turbines, and airfoil research has grown rapidly since last decade. Computational fluid dynamics (CFD) analysis is commonly used to study the airflow around a body. Yet, the wind tunnel is an essential instrument in aerodynamic research; however, a commercial wind tunnel normally comes with a small test section and incurs high investment costs. This paper presents the development of a low-cost subsonic open-loop wind tunnel for research and education purposes. The suction-type wind tunnel is intentionally designed wi

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Liu, Shanhe, Zhiwen Luo, Keer Zhang, and Jian Hang. "Natural Ventilation of a Small-Scale Road Tunnel by Wind Catchers: A CFD Simulation Study." Atmosphere 9, no. 10 (2018): 411. http://dx.doi.org/10.3390/atmos9100411.

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Providing efficient ventilation in road tunnels is essential to prevent severe air pollution exposure for both drivers and pedestrians in such enclosed spaces with heavy vehicle emissions. Longitudinal ventilation methods like commercial jet fans have been widely applied and confirmed to be effective for introducing external fresh air into road tunnels that are shorter than 3 km. However, operating tunnel jet fans is energy consuming. Therefore, for small-scale (~100 m–1 km) road tunnels, mechanical ventilation methods might be highly energetically expensive and unaffordable. Many studies have

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Cooper, Kevin R., Edzard Mercker, and Jürg Müller. "The necessity for boundary corrections in a standard practice for the open-jet wind tunnel testing of automobiles." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 231, no. 9 (2017): 1245–73. http://dx.doi.org/10.1177/0954407017701287.

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This paper is intended to provide a summary of the necessary adjustments required for road-representative open-jet wind tunnel measurements on automobiles. The open-jet wind tunnel provides accurate measurements, but they are made in a finite-sized jet that differs from the unconfined open-road conditions. Furthermore, measurements on a given automobile made in different open-jet wind tunnels disagree with each other, and with measurements in closed-wall wind tunnels that were corrected for the influences of their solid boundaries. There appears to be reticence at some company levels to making

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Vitalii, Yanovych, and Duda Daniel. "Structural Deformation of a Running Wind Tunnel Measured By Optical Scanning." Strojnícky časopis - Journal of Mechanical Engineering 70, no. 2 (2020): 181–96. http://dx.doi.org/10.2478/scjme-2020-0030.

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AbstractNowadays, the development of wind tunnels for the study of various aerodynamic phenomena is actively developing. It is possible to generate a highly laminar flow only under the condition of structural stability of the construction parts of the wind tunnel under the action of sharp pressure drops. The aim of this research is to investigate the deformation and displacement of the structural parts of the developed wind tunnel capacity of 55 kW depending on the velocity of the generated airflow. To estimate the amount of deformation and mutual displacement of the structural elements of the

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Wu, Hao, Yujian Zhong, Wei Xu, Wangshuaiyin Shi, Xinghao Shi, and Tong Liu. "Experimental Investigation of Ground and Air Temperature Fields of a Cold-Region Road Tunnel in NW China." Advances in Civil Engineering 2020 (July 22, 2020): 1–13. http://dx.doi.org/10.1155/2020/4732490.

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To fully understand the temperature distribution of cold regions and the variation law of temperature fields in cold-region tunnels, this paper presents a case-history study on a tunnel located on the eastern Qinghai-Tibet Plateau, China. The conclusion is as follows: the temperature outside the tunnel and the ambient temperature are affected by wind speed and light. The law of the temperature field in the tunnel is greatly affected by wind speed and wind direction. According to the field test, the wind speed in the tunnel is about 2.8 m/s in winter, and the daily average temperature at the ex

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Čeheľová, Dagmara, Michal Franek, and Boris Bielek. "Atmospheric Boundary Layer Wind Tunnel of Slovak University of Technology in Bratislava." Applied Mechanics and Materials 887 (January 2019): 419–27. http://dx.doi.org/10.4028/www.scientific.net/amm.887.419.

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Aerodynamics is a relatively young scientific discipline, which started developing in the 50´s of last century. There are known several methods for calculating and measuring of the aerodynamic variables – in-situ measurements, wind tunnel measurements, CFD simulations and calculations according to national standards. Each method has its advantages and disadvantages. Nowadays a large focus is on experimental verifying the findings achieved with calculations help and CFD simulations. One of the verification possibilities are measurements in wind tunnels. The submitted paper deals with constructi

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Raupach, MR, and JF Leys. "Aerodynamics of a portable wind erosion tunnel for measuring soil erodibility by wind." Soil Research 28, no. 2 (1990): 177. http://dx.doi.org/10.1071/sr9900177.

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Portable wind erosion tunnels must satisfy several aerodynamic criteria to ensure that the flow within them acceptably reproduces the atmospheric flow causing natural wind erosion. We define these criteria and use them to assess the flow and turbulence in two alternative designs of portable wind erosion tunnel: the first has a working section with an approximately triangular, 'tent-shaped' cross section, while the second has a conventional, rectangular working section. The measurements were made with Pitot-static tubes and X-configuration hot-wire anemometers, over stable (non-eroding) rough s

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Yang, Aiwei, Dawei Liu, Guangwei Xiang, and Gun Li. "Design of cryogenic balance temperature control system based on MCGS and PLC and analysis of its influence relationship." Journal of Physics: Conference Series 2993, no. 1 (2025): 012024. https://doi.org/10.1088/1742-6596/2993/1/012024.

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Abstract To address the issue of slow temperature adjustment in cryogenic balance, which severely affects the efficiency of wind tunnel tests, this study investigates the temperature control system for cryogenic balance. Considering the wide temperature range and deep cooling requirements of cryogenic wind tunnels, a comprehensive design of the temperature cryogenic was developed. Based on MCGS and PLC, the first domestically developed cryogenic balance temperature control system was implemented. After installation, equipment testing and wind tunnel experiments were conducted. The experimental

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Nachaiyaphum, Kwanjai, and Chonlatee Photong. "An electric power generation improvement for small Savonius wind turbines under low-speed wind." Indonesian Journal of Electrical Engineering and Computer Science 29, no. 2 (2023): 618. http://dx.doi.org/10.11591/ijeecs.v29.i2.pp618-625.

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<p>Savonius wind turbines have advantages of self-rotating at low speed wind, high starting torque, and less noise generation. However, they have low electric power generation capacity. This paper presents electric power generation improvement for small Savonius wind turbines when operating at low-speed wind of 1-6 m/s by using optimal Bach-type blades, twist blades and a wind tunnel. The turbine prototypes with the optimum diameter and height of 32 cm were developed with 3 different blade types: conventional semicircular blades, Bach-type blades and twisted 15° blades and a wind tunnel.

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Kwanjai, Nachaiyaphum, and Photong Chonlatee. "An electric power generation improvement for small Savonius wind turbines under low-speed wind." An electric power generation improvement for small Savonius wind turbines under low-speed wind 29, no. 2 (2023): 618–25. https://doi.org/10.11591/ijeecs.v29.i2.pp618-625.

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Savonius wind turbines have advantages of self-rotating at low speed wind, high starting torque, and less noise generation. However, they have low electric power generation capacity. This paper presents electric power generation improvement for small Savonius wind turbines when operating at low-speed wind of 1-6 m/s by using optimal Bach-type blades, twist blades and a wind tunnel. The turbine prototypes with the optimum diameter and height of 32 cm were developed with 3 different blade types: conventional semicircular blades, Bach-type blades and twisted 15° blades and a wind tunnel. The

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Maturkanič, Dušan. "EFFECT OF THE FLOW FIELD DEFORMATION IN THE WIND TUNNEL ON THE AERODYNAMIC COEFFICIENTS." Acta Polytechnica 55, no. 3 (2015): 177–86. http://dx.doi.org/10.14311/ap.2015.55.0177.

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The flow field quality has a principal signification at wind tunnel measurement. The creation of the flow field of air by fan leads to the rotation of entire flow field which is, moreover, deformed at the bends of the wind tunnel with close circulation. Despite the wind tunnels are equipped with the devices which eliminate these non-uniformities, in the most of cases, the air flow field has not ideal parameters in the test section. For the evaluation of the measured results of the model in the wind tunnel, the character of flow field deformation is necessary. The following text describes the p

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Setiawan, M. Yasep, Andre Kurniawan, Ichsan, et al. "Subsonic Wind Tunnels Air Speed Control Devices Base on Arduino Controller." E3S Web of Conferences 500 (2024): 03026. http://dx.doi.org/10.1051/e3sconf/202450003026.

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This study discusses the process of making an airspeed control device for wind tunnels using Arduino as the main component of the controller unit. Wind tunnel testing is carried out at varying airspeeds to obtain optimal results. The fan motor is not equipped with an air speed controller as an airflow generator. This research aims to make a tool that can control wind tunnel airspeed according to the testing needs. This research was conducted using the research and development method. The power supply voltage output is set at 11.19 Volts as the Arduino voltage source, and for other components s

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Zhang, Zheng Yu, Xu Hui Huang, Jiang Yin, and Han Xuan Lai. "Videogrammetric Techniques for Wind Tunnel Testing and Applications." Advanced Materials Research 986-987 (July 2014): 1629–33. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.1629.

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Videogrammetric measurement is a research focus for the organizations of wind tunnel test because of its no special requirements on the test model, its key techniques for the vibration environment of the high speed wind tunnel are introduced by this paper, such as the solution of exterior parameters with big-angle large overlap, the algorithm of image processing for extracting marked point, the method of camera calibration and wave-front distortion field measurement. The great requirements and application prospects of videogrammetry in wind tunnel fine testing have been demonstrated by several

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Yanovych, Viatlii, and Daniel Duda. "Using ARAMIS system for measurement of structural stability of running wind tunnel." MATEC Web of Conferences 328 (2020): 01003. http://dx.doi.org/10.1051/matecconf/202032801003.

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Wind tunnels are popularly used to study various aerodynamic phenomena. Their design significantly influences the quality of the created airflow. During the flow generation, the construction parts of the wind tunnel to get deformed due to pressure variations. This phenomenon significantly complicates the creation of high-level laminar flow and worsens the results of experimental studies. The main purpose of this work is to investigate the effect of a sharp change in flow velocity on the structural stability of parts of a wind tunnel with a capacity of 55 kW. For experimental studies, we used t

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Zhu, Yuhao, Xu Zhou, Yong Chen, et al. "Comparison of Aerodynamic Effects on the Commonwealth Advisory Aeronautical Research Council (CAARC) Tall Building Model Tested in Two Wind Tunnel Laboratories." Applied Sciences 15, no. 2 (2025): 811. https://doi.org/10.3390/app15020811.

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Wind tunnel test results can be influenced by various factors such as the blockage ratio and scaling ratio. These factors may introduce errors in the experimental outcomes, impacting the accuracy and reliability of the data obtained. This study quantitatively assesses consistency and identifies uncertainty sources to enhance result uniformity across various wind tunnel laboratories. This study conducted a systematic comparison between different wind tunnels in terms of rigid model pressure measurement wind tunnel experiments on the same Commonwealth Advisory Aeronautical Research Council (CAAR

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Yi, Zijing, Lingjun Wang, Xiao Li, Zhigang Zhang, Xu Zhou, and Bowen Yan. "Computational Fluid Dynamics-Aided Simulation of Twisted Wind Flows in Boundary Layer Wind Tunnel." Applied Sciences 14, no. 3 (2024): 988. http://dx.doi.org/10.3390/app14030988.

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The twisted wind flow (TWF), referring to the phenomenon of wind direction varying with height, is a common feature of atmospheric boundary layer (ABL) winds, noticeably affecting the wind-resistant structural design and the wind environment assessment. The TWF can be effectively simulated by a guide vane system in wind tunnel tests, but the proper design and configuration of the guide vanes pose a major challenge as practical experience in using such devices is still limited in the literature. To address this issue, this study aims to propose an approach to determining the optimal wind tunnel

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Poddaeva, Olga. "RESULT VERIFICATION FOR NUMERICAL MODELING OF WIND EFFECTS ON UNIQUE BUILDINGS AND STRUCTURES." Architecture and Engineering 9, no. 2 (2024): 79–85. http://dx.doi.org/10.23968/2500-0055-2024-9-2-79-85.

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Introduction: Despite the fact that wind tunnel testing is quite expensive and time-consuming, physical modeling in wind tunnels remains the primary method for determining wind effects on unique buildings and structures. Computational fluid dynamics (CFD) provides more variability, calculations are performed faster and at a lower cost. However, the issue of accuracy of integral characteristics obtained as a result of numerical modeling and, accordingly, verification procedure remains open. Currently, when using numerical modeling results in structural aerodynamics, it is mandatory to verify th

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Jayawant, Shlok, Yuvraj Tiwari, Sarfaraz Khan, and Christy Pillay. "Design and Construction of a cost-efficient Laminar Flow Wind Tunnel for Aerodynamic Testing." International Scientific Journal of Engineering and Management 04, no. 03 (2025): 1–6. https://doi.org/10.55041/isjem02370.

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The intention of this project is to design and build a cost-efficient laminar flow wind tunnel to test airfoil performance characteristics. While there are cost-efficient wind tunnels available for learning purposes, they are usually only designed to show the visual representation of airflow over the airfoil. This project will create accurate and repeatable measurements of performance characteristics, making it a budget friendly solution for college level research labs. The wind tunnel will be designed using CAD and scientifically tested for laminar and uninterrupted flow. The main measurement

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Frechen, F. B., M. Frey, M. Wett, and C. Löser. "Aerodynamic performance of a low-speed wind tunnel." Water Science and Technology 50, no. 4 (2004): 57–64. http://dx.doi.org/10.2166/wst.2004.0220.

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The determination of the odour mass flow emitted from a source is a very important step and forms the basis for all subsequent considerations and calculations. Wastewater treatment plants, as well as waste treatment facilities, consist of different kinds of odour sources. Unfortunately, most of the sources are passive sources, where no outward air flow-rate can be measured, but where odorants are obviously emitted. Thus, a type of sampling is required that allows to measure the emitted odour flow-rate (OFR). To achieve this, different methods are in use worldwide. Besides indirect methods, suc

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Shindo, Shojiro. "Wind Tunnel Testing." Journal of the Visualization Society of Japan 15, Supplement1 (1995): 277–80. http://dx.doi.org/10.3154/jvs.15.supplement1_277.

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