The effect of wall roughness on gas-particle flows in a horizontal backward-facing step is studied using a phase-Doppler particle anemometer (PDPA) by measuring the mean and RMS particle velocities.
用相位多普勒颗粒测速仪（PDPA）测量了颗粒的平均与脉动速度，研究了壁面粗糙度对水平后台阶气粒两相流动的影响。
Experimental investigations of control of separation flows of several typical geometry configurations have been reviewed, such as, 2d backward facing step, airfoil, axisymmetric bluff body, etc.
综述了二维后向台阶、翼型以及轴墩称钝体等典型分离流动激振控制的实验研究。
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