Slip of Newtonian fluids at solid boundary

被引：63

作者：

Watanabe, K ^{[1
]}

Yanuar ^{[1
]}

Mizunuma, H ^{[1
]}

机构：

[1] Tokyo Metropolitan Univ, Fac Engn, Dept Engn Mech, Hachioji, Tokyo 1920397, Japan

来源：

JSME INTERNATIONAL JOURNAL SERIES B-FLUIDS AND THERMAL ENGINEERING | 1998年 / 41卷 / 03期

关键词：

fluid mechanics; Newtonian fluids; square duct flow; boundary condition; velocity profile; fluid slip; coefficient of sliding friction;

D O I：

10.1299/jsmeb.41.525

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A real fluid does not slip at the surface of a solid boundary. Most experimental results of a Newtonian fluid satisfy with this condition. If a real fluid can slip freely over the surface of a solid boundary, how can we deduce the slip velocity. The purpose of this study is to experimentally clarify fluid slip velocity of Newtonian fluids at the duct wall. Velocity profiles of tap water and 20 wt% glycerin solution flowing in a square duct with a highly water repellent wall were measured by means of a conical hot film anemometer. Consequently, the velocity profile with the slip is measured, and the laminar drag reduction phenomena and the friction factor formula for a square duct with fluid slip at the wall have been obtained.

引用

页码：525 / 529

页数：5