摘要
利用热线侧角对风速测量的影响提出了在平面内将“Ｘ”型探针旋转４５°来测量三维速度的新方法，通过数学推导获得了分解三维平均速度和脉动速度的数学计算式，并且在标准风洞上进行了实验验证。
Based on the effect of angle of air-flow on measure precision, this paper gives the new measure method of three dimension velocity by rotating “X”probe 45 °on a plane,the formulas of calculating the three dimension time-average velocity and fluctation velocity are got by mathematical process,The new way is verified by experments on the gas probe calibrator,the way is simple and rapid.
关键词
热线风速仪
探针
三维速度
时均速度
hot wire anemometer
“X” probe
three dimension
Velocity
time-average velocity fluctation velocity
