A NUMERICAL-SOLUTION FOR THE TURBULENT-FLOW OF NON-NEWTONIAN FLUIDS IN THE ENTRANCE REGION OF A HEATED CIRCULAR TUBE

被引：3
|
作者：
WANGSKARN, P
GHORASHI, B
GORLA, RSR
机构：
[1] Cleveland State University, Cleveland
来源：
INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW | 1990年 / 11卷 / 01期
关键词：
developing region; entrance region; non-Newtonian fluids; power-law fluids;
D O I：
10.1016/0142-727X(90)90022-4
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Numerical solutions of conservation equations are obtained for turbulent flow of non-Newtonian fluids in a circular tube. The forward marching procedure of Patankar and Spalding1 was implemented in order to obtain the simultaneous development of the velocity and temperature fields by using the apparent viscosity of fluids. Prandtl's mixing length concept is used to determine the apparent turbulent shearing stress. Furthermore, local and average Nusselt numbers are obtained in the entrance region, as well as in the fully developed region. For the case of the fully developed region, values of the Nusselt numbers are compared both with the experimental data and empirical correlations. © 1989.
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页码：40 / 43
页数：4
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