具有零切应力平面的平面科特流实验研究

An Experiment Report of Plane Couette Flow with Zero Shear-Stress Plane

以隧道中运行的地铁列车为载体,在动壁面上进行了平面科特流的实验.实验结果表明实验点与理论计算值吻合良好.证明具有零切应力平面的平面Couette流理论是正确的.为计算列车通过隧道时的空气摩擦阻力与压力波的传播,提供了一种简单可行的计算理论和实验根据.

An experiment is made to prove a new universal method for the calculation of the steady in_ compressible plane Couette flow with a zero shear_stress plane.The experiment instruments are set on a experiment train of Beijing Subway. There are four set data are taken between the up_wall of the tunnel and top_wall outside of the train with constant train velocity. Two of which are full developed turbulent Couette flow, two of which are turbulent_laminar Couette flow. The measured velocity distribution with large range of Reynolds number and Couette shape factor are perfectly corresponding to the theory. A cheap and easy experiment method and also a simple and universal calculation method of plane Couette flow are proposed in this paper.