Email this article 
Open Access
Subscription or Fee Access
Design and Testing of ISU-AABL Wind and Gust Tunnel
(*) Corresponding author
DOI's assignment:
the author of the article can submit here a request for assignment of a DOI number to this resource!
Cost of the service: euros 10,00 (for a DOI)
Abstract
A wind tunnel with advanced capabilities will aid research efforts to understand the complex fluid structure interaction problems encountered in aerospace engineering, industrial aerodynamics and wind engineering applications since wind tunnels remain an integral component of the design process for wind sensitive structures. Whether dealing with the aerodynamics of aerospace, mechanical or civil engineering structures many issues remain to be fully resolved-including the role of non-stationary gust interactions, Reynolds number effects, and the significance of small-scale turbulence. Building the next generation of such wind tunnels will contribute to the understanding of these issues. A combination Aerodynamic/Atmospheric Boundary Layer (AABL) Wind and Gust Tunnel with a unique active gust generation capability has been developed for various applications at Iowa State University (ISU). This wind tunnel is primarily a closed-circuit tunnel that can be also operated in open-return mode. It is designed to accommodate two test sections (2.44m x 1.83m and 2.44m x 2.21m) with a maximum wind speed capability of 53 m/s. This paper describes the wind tunnel and its components and presents a comparison of the predicted and measured design parameters. It shows that the wind tunnel is capable of generating uniform flow with very low turbulence in the aerodynamic test section and produces gust magnitudes around 27% of the mean flow speed.
Copyright © 2016 Praise Worthy Prize - All rights reserved.
Keywords
References
J.E. Cermak, Laboratory Simulation of the Atmospheric Boundary Layer, AIAA Journal, 9 (1971), 1746-1754.
http://dx.doi.org/10.2514/3.49977
N.J. Cook, On Simulating the Lower Third of the Urban Adiabatic Boundary Layer in a Wind Tunnel, Atmospheric Environment, 7 (1973), 691-705.
http://dx.doi.org/10.1016/0004-6981(73)90151-0
A.G. Davenport, The Treatment of Wind Loading on Tall Buildings, Proc. of the Symposium on Tall Buildings (1966).
http://dx.doi.org/10.1016/b978-0-08-011692-1.50006-7
C. Farell, A.K.S. Iyengar, Experiments on the Wind Tunnel Simulation of Atmospheric Boundary Layers, Journal of Wind Engineering and Industrial Aerodynamics, 79 (1999), 11-35.
http://dx.doi.org/10.1016/s0167-6105(98)00117-2
I.S. Gartshore, The Effects of Free Stream Turbulence on the Drag of Rectangular Two-Dimensional Prisms, (Boundary Layer Wind Tunnel Laboratory, 1973, 4-73, University of Western Ontario).
A. Kareem, A., J.E. Cermak, Wind-Tunnel Simulation of Wind Structure Interactions, ISA Transactions, 18 (1979), 23-41.
R. Hillier, R.J. Cherry, The Effect of Stream Turbulence on Separation Bubbles, Journal of Wind Engineering and Industrial Aerodynamics, 8 (1981), 49-58.
http://dx.doi.org/10.1016/0167-6105(81)90007-6
P.W. Bearman, T. Morel, Effect of Free Stream Turbulence on the Flow Around Bluff Bodies, Progress in Aerospace Sci., 20 (1983), 97-123.
http://dx.doi.org/10.1016/0376-0421(83)90002-7
Y. Nakamura, Y. Ohya, The Effects of Turbulence on the Mean Flow Past Two-Dimensional Rectangular Cylinders, Journal of Fluid Mechanics, 149 (1984), 255-273.
http://dx.doi.org/10.1017/s0022112084002640
M. Kiya, K. Sasaki , Structure of Large-Scale Vortices and Unsteady Reverse Flow in the Reattaching Zone of Turbulent Separation Bubble, Journal of Fluid Mechanics, 154 (1985), 463-491.
http://dx.doi.org/10.1017/s0022112085001628
P.J. Saathoff, W.H. Melbourne, Effects of Free-Stream Turbulence on Surface Pressure Fluctuations in a Separation Bubble, Journal of Fluid Mechanics, 337 (1997), 1-24.
http://dx.doi.org/10.1017/s0022112096004594
H.W. Tieleman, R.E. Akins, Effects of Incident Turbulence on Pressure Distributions on Rectangular Prisms, Journal of Wind Engineering and Industrial Aerodynamics, 36 (1990), 579-588.
http://dx.doi.org/10.1016/0167-6105(90)90340-i
W.H. Melbourne, Turbulence Effects on Maximum Surface Pressure – A Mechanism and Possibility of Reduction, Wind Engineering, Proc. of Fifth International Conference (Pergamon Press, 1979).
http://dx.doi.org/10.1016/b978-1-4832-8367-8.50055-3
B. Bienkiewicz, J.E. Cermak, J.A. Peterka, R.H. Scanlan, Active Modeling of Large-Scale Turbulence, Journal of Wind Engineering and Industrial Aerodynamics, 13 (1983), 465-475.
http://dx.doi.org/10.1016/0167-6105(83)90165-4
H. Kobayashi, A. Tanaka, T. Ueda, Active Simulation of Time Histories of Strong Wind Gust in a Wind Tunnel, Journal of Wind Engineering and Industrial Aerodynamics, 53 (1994), 315-330.
http://dx.doi.org/10.1016/0167-6105(94)90089-2
J.E. Cermak, S.C. Leighton, R.D. Leffler, Wind-Tunnel Modeling of the Atmospheric Surface Layer, Journal of Wind Engineering and Industrial Aerodynamics, 54/55 (1995), 505-513.
http://dx.doi.org/10.1016/0167-6105(94)00065-l
J.L. Schroeder, D.A. Smith, Hurricane Bonnie Wind Flow Characteristics as Determined from WEMITE, Wind Engineering into the 21st Century, Proc. of Tenth International Conference on Wind Engineering, (1999), 329-335.
http://dx.doi.org/10.1016/s0167-6105(02)00475-0
L. Chen, C. Letchford, Simulation of Extreme Winds from Thunderstorm Downbursts, Proc. of 10th America’s Conference on Wind Engineering, (2005).
http://dx.doi.org/10.1016/j.jweia.2007.01.021
L. Wang, A. Kareem, Modeling and Simulation of Transient Winds in Downbursts/Hurricanes, Proc. of 10th America’s Conference on Wind Engineering, (2005).
F. Wu, P.P. Sarkar, K.C. Mehta, Full-Scale Study of Conical Vortices and Roof Corner Pressures, Wind & Structures, An International Journal, 4 (2001a), 131-146.
http://dx.doi.org/10.12989/was.2001.4.2.131
F. Wu, P.P. Sarkar, K.C. Mehta, Z. Zhao, Influence of Incident Wind Turbulence on Pressure Fluctuations Near Flat-Roof Corners, Journal of Wind Engineering and Industrial Aerodynamics, 89 (2001b), 403-420.
http://dx.doi.org/10.1016/s0167-6105(00)00072-6
W.S. Saric, The ASU Transition Research Facility, AIAA 17th Aerospace Ground Testing Conference, AIAA-92-3910 (1992).
http://dx.doi.org/10.2514/6.1992-3910
F.L. Haan, Jr., P.P. Sarkar, N. Spencer-Berger, Development of an Active Gust Generation Mechanism on a Wind Tunnel for Wind Engineering and Industrial Aerodynamics Applications, Wind and Structures, An International Journal, 9 (2006).
http://dx.doi.org/10.12989/was.2006.9.5.369
Refbacks
- There are currently no refbacks.
Please send any question about this web site to info@praiseworthyprize.com
Copyright © 2005-2024 Praise Worthy Prize
