建筑风环境风洞试验中风速探头的研制与应用

研制简易风速探头并通过风洞试验研究探头的气动力特性,为探头的推广应用奠定基础。基于Irwin提出的风速探头原理,研制了用于建筑风环境风洞试验的简易风速探头,对风速探头压力测试结果的影响因素进行了试验分析,并对探头进行了标定,给出了不同高度风速探头的标定系数,同时对湍流场中不同风速下的测试精度和探头间干扰效应对测试精度的影响作了试验分析,最后对一典型小区进行了风环境测试分析。研究结果表明：所研制的简易风速探头对平均风速有较高的测试精度,能够用于建筑风环境风洞试验。

Development and application of wind speed probe for wind tunnel test of wind environment around buildings

A simplified wind speed probe was developed and aerodynamic characteristics of the probe were researched through the wind tunnel test for the application in the wind tunnel test of wind environment around buildings.Based on the principle of wind speed probe proposed by Irwin,a kind of simplified wind speed probe was developed for wind tunnel test of wind environment around buildings,and the factors affecting pressure of wind speed probe were studied.The wind speed probes were calibrated,and the calibration coefficients were given for different heights.The test accuracy for different wind speeds in turbulent flow field and the affect of interference effects on the probe test accuracy were studied,and finally the wind environment of a typical small residential was tested.Research results show that,the simplified wind speed probe developed in this paper has high precision on measuring average wind speed,and can be used for wind tunnel test of wind environment around buildings.