科特（Couerre）数Pr=1的环隙科特...

The Turbulent Couette Flow Between Two Concentric Cylinders With the Couette Number 0≤Pr≤1

本文在实验的基础上提出了同心环隙逆压梯度作用下的紊流科特流的分析方法。并就如何确定拐点处速度和拐点坐标以及壁面切应力和速度分布进行了深入的讨论。同时还证实了在雷诺数Re≤5.8×10~4、半径比η=1.022的条件下,理论计算与实验结果符合得很好。

This paper presents an analytical and experimental study of the turbulent Couette flow with the opposite pressure gradient and with the Couette number 0≤Pγ≤1 in an annular channel with a rotating core, Inflexion velocity and their coodinates,wall friction and velocity profiles were determined over a Reynolds number range up to 5.8×10~4 and radius ratio of 1.022. The experimental results are shown to be in good agreement with the predictions of a four-layer gradient-diffusion model.