Drag reduction by linear viscosity model in turbulent channel flow of polymer solution

被引：2

作者：

Wu Gui-fen ^{[1
]}

Li Chang-feng ^{[1
]}

Huang Dong-sheng ^{[2
]}

Zhao Zuo-guang ^{[1
]}

Feng Xiao-dong ^{[1
]}

Wang Rui ^{[1
]}

机构：

[1] Jiangsu Univ, Sch Energy & Power Engn, Zhenjiang 212013, Peoples R China

[2] Shanghai Maple Automobile Co Ltd, Shanghai 201501, Peoples R China

来源：

JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY | 2008年 / 15卷 / Suppl 1期

基金：

中国国家自然科学基金;

关键词：

turbulence; drag reduction; viscosity profile; polymers; velocity; Reynolds stress;

D O I：

10.1007/s11771-008-0355-6

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

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 Virk's 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.

引用

页码：243 / 246

页数：4

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