Characteristics of Velocity Fluctuation Produced Reynolds Shear Stress in the Turbulent Vortex Street Wake

摘要

The purpose of this investigation is to clarify the production mechanism of Reynolds shear stress in the vortex street wake. The space distributions of velocity fluctuation were shown by using ensemble average technique based on angular direction of velocity fluctuation vector at reference point where is maximum production point of Reynolds shear stress. As the result of this study, the relation between the space structure produced Reynolds shear stress and the angular direction of velocity fluctuation vector was revealed.