Combined effect of variable fluid properties on nonisothermal flow of an inelastic fluid with viscous heating

被引：6

作者：

Pinarbasi, A. ^{[1
]}

Toros, E. ^{[1
]}

Imal, M. ^{[2
]}

机构：

[1] Cukurova Univ, Dept Mech Engn, TR-01330 Adana, Turkey

[2] Sutcu Imam Univ, Dept Mech Engn, TR-46100 K Maras, Turkey

来源：

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 2009年 / 36卷 / 03期

关键词：

Variable fluid properties; Inelastic fluid; Non-isothermal flow; Viscous heating; TEMPERATURE-DEPENDENT VISCOSITY; THERMAL-CONDUCTIVITY; STRETCHING SHEET; NATURAL-CONVECTION; STABILITY; CONE;

D O I：

10.1016/j.icheatmasstransfer.2008.11.004

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This study investigates the effect of variable thermal conductivity and variable viscosity on the flow characteristics and flow rates of an inelastic fluid, including viscous heating terms in the analysis. The exponential dependence of viscosity on temperature is modeled through Arrhenius law and shear rate dependence is modeled through Carreau rheological equation while it is assumed that the thermal conductivity varies linearly with temperature. Flow governing motion and energy balance equations are coupled and the solution is found iteratively facilitating a pseudospectral method based on the Chebyshev polynomial expansions. Effect of variable thermal conductivity and viscosity as well as the effect of power law index, material time constant, Brinkman and Peclet numbers on the velocity and temperature profiles are presented. Influence of the above parameters on the flow rate is also calculated. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：280 / 285

页数：6

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