Wind Tunnel Study on Wind Speeds near the Ground with Roughness Blocks
Wind Tunnel Study on Wind Speeds near the Ground with Roughness Blocks
复制标题
粗糙度块近地面风速风洞研究
DOI：
10.11395/aem.7.0_162
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Yasuo OKUDA
中科院分区：
文献类型：
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作者：
Yuki TAKADATE;Yasuo OKUDA
在湍流边界层风洞中进行了用热线风速仪测量近地面垂直风廓线的风洞试验。根据建筑物标准法或AIJ建筑物荷载建议，在低于Zb的高度处的地面附近的风速被指定为恒定值。然而，在实际情况下，当高度接近地面时，由于地面的摩擦，风速减小。在本研究中，重点是在地面附近的粗糙块的平均和最大风速和湍流强度的垂直风廓线。根据风洞试验结果，研究了平均风速和最大风速之间的关系。最后，提出了一个可以从平均风速估计最大风速的方程，并与以前的研究中提出的方程进行了比较。
A wind tunnel experiment was carried out in a turbulent boundary layer wind tunnel to measure the vertical wind profile near the ground using a hot-wire anemometer. According to the Building Standard Law or AIJ Recommendation for Loads on Buildings, the wind speed near the ground surface at a height below Zb is specified as a constant value. In the practical case, however, as the height approaches the ground surface, the wind speed decreases owing to the friction of the ground surface. In the present study, the focus was on the vertical wind profiles of the mean and maximum wind speeds and turbulence intensity near the ground with roughness blocks. The relationship between the mean and maximum wind speeds was investigated based on the results of the wind tunnel experiment. Finally, an equation that can estimate the maximum wind speed from the mean wind speed was proposed and compared with the equation proposed in a previous study.