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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)
  • 발행 : 1998.12.25

초록

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.

키워드

참고문헌

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