壁面加热湍流标度律的实验研究

Experimental research of scaling law in a turbulent boundary layer over heated wall

用热线风速仪测量了风洞中壁面加热和不加热平板湍流边界层不同法向位置的流向速度和温度的时间序列信号 ,研究了壁面加热的边界条件和不同法向位置的剪切作用对速度和温度增量的p阶结构函数的非线性反常标度律的影响 ,实验结果表明 ,壁面加热的边界条件不同法向位置的剪切作用对层次结构模型中间歇参数 β和最奇异指数γ的影响明显存在 。

Velocity and temperature measurements at different vertical locations in a turbulent boundary layer over a heated plate in a wind tunnel have been carried out using hot wire anemometer. The scaling laws of velocity and temperature structure function and their relations with the mean velocity shear strain at different vertical locations as well as heated wall boundary condition have been investigated experimentally.