Experimental Study of Wall Influence on the Wake Produced by Two Tandem Circular Cylinders
壁面对串列双圆柱尾迹影响的实验研究

In order to investigate experimentally the flow characteristics of two tandem circular cylinders with equal diameter located in a fully developed turbulent boundary layer close to wall,the vortex structure in wake turbulent flow and frequency spectrum were measured by using particle image velocimetry(PIV) and pressure sensor.Experiment was performed in a recirculation water channel.Reynolds number is 1696 based on cylinder diameter(D) and the boundary layer thickness is 6.6D.Two significant parameters that ...