Study on the Law of Wind Characteristic Parameters in Grille Turbulent Flow
BAI Hua1, HE Han-xin2, ZHAO Guo-hui1, GAO Liang3
1. School of Highway, Chang’an University, Xi’an 710064, Shaanxi, China，
2. School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China，
3. Xi’an University of Technology, Xi’an 710048
Abstract：For the convenience of the study on the effects of turbulence characteristic parameters on the wind tunnel test results of different structures. The parameters of partial turbulent wind produced by different grille shapes were measured and the influence rules of the distance between the two grilles and the width of the grille on turbulence intensity, turbulence integral scale and fluctuating wind power spectra at different cross section were summarized by means of wind tunnel test. The research results show that the partial turbulent wind with good uniformity can be developed at the cross section 3.5 meters away from grilles. The turbulence intensity generates by grilles changes little with the change of wind velocity. Smaller widths of grilles, lower turbulence intensity, and better the stability of data. The size of turbulence integral scale is nearly the same as the distance between the two grilles. To facilitate the partial turbulent wind adjustments, the estimate formula of turbulence intensity and turbulence integral scale by the width and space of grilles has been obtained.
白桦1，何晗欣2，刘健新1，赵国辉1，高亮3. 格栅紊流风特性参数模拟规律研究[J]. 振动与冲击, 2016, 35(22): 209-214.
BAI Hua1, HE Han-xin2, ZHAO Guo-hui1, GAO Liang3. Study on the Law of Wind Characteristic Parameters in Grille Turbulent Flow. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(22): 209-214.
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