Drag reduction by linear viscosity model in turbulent channel flow of polymer solution
A further numerical study of the theory that the drag reduction in the turbulence is related to the viscosity profile growing linearly with the distance from the wall was performed. The constant viscosity in the Navier-Stokes equations was replaced using this viscosity model. Some drag reduction characteristics were shown comparing with Virks phenomenology. The mean velocity and Reynolds stress profiles are consistent with the experimental and direct numerical simulation results. A drag reduction level of 45% was obtained. It is reasonable for this linear viscosity model to explain the mechanism of turbulence drag reduction in some aspects.
turbulence drag reduction viscosity profile polymers velocity Reynolds stress
WU Gui-fen(吴桂芬) LI Chang-feng(李昌烽) HUANG Dong-sheng(黄东升) ZHAO Zuo-guang(赵作广) FENG Xiao-dong(冯晓东) WANG Rui(王瑞)
School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China Shanghai Maple Automobile Co. Ltd, Shanghai 201501, China
国际会议
长沙
英文
243-246
2008-09-28（万方平台首次上网日期，不代表论文的发表时间）