Secondary flow structure of turbulent Couette-Poiseuille and Couette flows inside a square duct

摘要

The turbulent Couette-Poiseuille and Couette flows inside a square duct are investigated by present simulation procedures. Mean secondary flow is observed to be modified by the presence of moving wall where the symmetric vortex pattern vanishes. Secondary flow near the top corner shows a gradual change of vortex size and position as the moving wall velocity increased.