Wind and Structures

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Wind tunnel blockage effects on aerodynamic behavior of bluff body

  • Choi, Chang-Koon (Department of Civil Engineering, Korea Advanced Institute of Science and Technology(KAIST)) ;
  • Kwon, Dae-Kun (Department of Civil Engineering, KAIST)
  • Published : 1998.12.25
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Abstract

In wind tunnel experiments, the blockage effect is a very important factor which affects the test results significantly. A number of investigations into this problem, especially on the blockage correction of drag coefficient, have been carried out in the past. However, only a limited number of works have been reported on the wind tunnel blockage effect on wind-induced vibration although it is considered to be fairly important. This paper discusses the aerodynamic characteristics of the square model and square model with corner cut based on a series of the wind tunnel tests with various blockage ratios and angles of attack. From the test results, the aerodynamic behavior of square models with up to 10% blockage ratio are almost the same and square models with up to 10% blockage ratio can be tested as a group which behaves similarly.

Keywords

References

  1. ASCE Standard (1997), Wind Tunnel Testing for buildings and Other Structures, June.
  2. An Editiorial Board of Bridge and Wind (1990), The Bridge and Wind.
  3. Awbi, H.B. (1978), "Wind-tunnel-wall constraint on two-dimensional rectangular section prisms" , J. of Industrial Aerodynamics, 3.
  4. Choi, C.K., Yu, W.J. and Kwon, D.K. (1998), "Comparison between the CFD and wind tunnel experiment for tall building with various corner shapes", Proceedings of the Fifth International Conference on Tall Buildings, Hong Kong, 632-637.
  5. Choi, C.K. and Kwon, D.K. (1999), "An aerodynamic characteristics study on various section shapes of rectangular cylinder" , Journal of the Wind Engineering Institute of Korea.
  6. Cowdrey, C.F. (1967), "The application of Maskell's theory of wind tunnel blockage to very large solid models" , NPL Aero R.1247.
  7. Honshu-Shikoku Bridge Authority (1980), The Specification for the Wind-Resistant Design Code of Honshu-Shikoku bridge.
  8. Honshu-Shikoku Bridge Authority (1990), The Specification for the Wind-Resistant Design Code and Explanation.
  9. Houghton, E.L. and Carruthers, N.B. (1976), Wind Force on Buildings and Structures, Edward Arnold.
  10. Japanese Architectural Center (1994), A Guide book for Structural Engineers on the Wind Tunnel Test of Architectural Structures.
  11. Laneville, A. and Trepanier, J.Y. (1986), "Blockage effects in smooth and turbulent flows : The case of 2-D rectangular cylinders" , J. of Wind Eng. And Industrial Aerodynamics, 22.
  12. Liu, H. (1991), Wind Engineering: A Handbook for Structural Engineers, Prentice-Hall.
  13. Maskell, E.C. (1963), A theory of the blockage effects on bluff bodies and stalled wings in a closed wind tunnel", R & M, No. 3400, ARC.
  14. Noda, M., Utsunomiya, H. and Nagao, F. (1993), "Basic study on blockage effects in turbulent boundary layer flows", Third Asia-Pacific Symposium on Wind Eng., 905-910, December 13-15.
  15. Sykes, D.M. (1973), "Blockage corrections for large bluff bodies in wind tunnels" , BHRA Fluid Eng.
  16. Takeda, T. and Kato, M. (1992), "Wind tunnel effects on drag coefficient and wind-induced vibration" , Journal of Wind Engineering and Industrial Aerodynamics, 41-44, 897-908.

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