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首先简单介绍了日本东京工艺大学风工程研究中心新建的开环流低速边界层风洞中风剖面模拟的试验情况。基于试验结果,采用被广泛应用的三角尖劈加上布置粗糙元的方法,成功地模拟出日本建筑学会定义的四类不同场地对应的风剖面。通过对试验数据的比较分析,就所采用的立方体粗糙元及三角尖劈对最终模拟得到的风剖面特性的影响进行了比较分析。其次,对风剖面模拟及特性判定中的几个重要问题,如三角尖劈的形状优化、风速功率谱的一致性、积分尺度的分析方法等进行了分析。最后,基于以上分析,对在边界层风洞中模拟预定的风剖面提出几点参考意见。
First of all, a brief introduction of the simulation of the wind profile of a newly opened low-velocity boundary layer wind tunnel at the Tokyo University of Engineering Wind Engineering Research Center is presented. Based on the experimental results, the widely used triangular splinters and the method of arranging rough elements were successfully used to simulate the wind profiles corresponding to the four different types of sites defined by the Japan Architecture Institute. Through the comparative analysis of the experimental data, the effects of the cubic roughness elements and the triangular wedges on the final simulated wind profile are compared and analyzed. Secondly, several important issues in the simulation and characterization of wind profile are analyzed, such as the shape optimization of triangular wedges, the consistency of wind power spectrum and the analysis method of integral scale. Finally, based on the above analysis, some suggestions for simulating a predetermined wind profile in a boundary layer wind tunnel are given.