Study on the Effect of Turbulence Intensity and Integral Scale on the Reynolds Number Effect for the Surface Wind Pressure of Rectangular Structure
[1]Bai Hua,Guo Congmin,Liu Jianxin.Study on the Effect of Turbulence Intensity and Integral Scale on the Reynolds Number Effect for the Surface Wind Pressure of Rectangular Structure[J].Journal of Zhengzhou University (Engineering Science),2018,39(02):73-79.[doi:10.13705/j.issn.1671-6833.2018.02.005]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
39
Number of periods:
2018 02
Page number:
73-79
Column:
Public date:
2018-03-30
- Title:
- Study on the Effect of Turbulence Intensity and Integral Scale on the Reynolds Number Effect for the Surface Wind Pressure of Rectangular Structure
- Keywords:
- civil engineering; wind tunnel test; Reynolds number effect; turbulence integral scale; turbulence intensity
- CLC:
- -
- Abstract:
- The experimental results obtained from the conventional low Reynolds number wind tunnel test may produce errors due to the Reynolds number effect. And the improper simulation of turbulent wind parameters may lead to further increase of the error in the wind tunnel test. By using grille turbulence in the wind tunnel, a series of local turbulent wind fields were formed with the same turbulence intensity but different integral scale and with the same turbulence integral scale but different intensity. This paper examined the Reynolds number effect for the surface wind pressure of rectangular structure and the effect of turbulence intensity and integral scale on the Reynolds number effect for the surface wind pressure. The results showed that: the Reynolds number effect of the mean wind pressure and the fluctuating wind pressure was the lowest in the windward side, the maximum in the leeward side and the second in the crosswind. The increase of the turbulence integral scale and intensity would lead to the further increase of the mean wind pressure’s rangeability in the sensitive region of the Reynolds number effect. The influence of the integral scale on the Reynolds number effect of the fluctuating wind pressure was smaller than that of the mean wind pressure, especially on the leeward side. And the turbulence intensity had little effect on the Reynolds number effect. The fluctuating wind pressure on the structure surface was mainly dependent on the turbulence intensity of the inflow, which was independent of the scale of the model.
- References:
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Last Update:
2018-04-02