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Parallel Computational Fluid Dynamics 2006 by A. Ecer, N. Satofuka, Pat Fox, Jacques Periaux, Jang-Hyuk Kwon

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Prediction of secondary flow structure in turbulent Couette-Poiseuille flows inside a square duct

Wei Loa; Chao-An Linacalin@pme.nthu.edu.tw    a Department of Power Mechanical Engineering. National Tsing Hua University, Hsinchu 300, TAIWAN

Turbulent Couette-Poiseuille flows inside a square duct at bulk Reynolds number 9700 are investigated using the Large Eddy Simulation technique. Suppression of turbulence intensities and a tendency towards rod-like axi-symmetric turbulence state at the wall-bisector near the moving wall are identified. The turbulence generated secondary flow is modified by the presence of the top moving wall, where the symmetric vortex pattern vanishes. The angle between the two top vortices is found to corredate with the ratio ...

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