MHD FLOW INSIDE A STRETCHING/SHRINKING CONVERGENT/DIVERGENT CHANNEL WITH HEAT GENERATION/ABSORPTION AND VISCOUS-OHMIC DISSIPATION UTILIZING CU-WATER NANOFLUID

被引：27

作者：

Pandey, Alok Kumar ^{[1
]}

Kumar, Manoj ^{[1
]}

机构：

[1] GB Pant Univ Agr & Technol, Dept Math Stat & Comp Sci, Pantnagar 263145, Uttarakhand, India

来源：

COMPUTATIONAL THERMAL SCIENCES | 2018年 / 10卷 / 05期

关键词：

heat generation/absorption; nanofluid; Ohmic heating; stretchable/shrinkable channel; viscous dissipation;

D O I：

10.1615/ComputThermalScien.2018020807

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The goal of the present study is to analyze the magnetohydrodynamic flow of Cu-water nanofluid between two stretchable/shrinking channels due to the effects of heat generation/absorption, viscous dissipation, and Ohmic heating. The model of thermal conductivity and dynamic viscosity is based on the spherical shape of nanoparticles. The numerical method Runge-Kutta-Fehlberg fourth-to fifth-order scheme has been employed with a shooting scheme to solve the transformed ordinary differential equations. The numerical solution of several dominant parameters, that is, heat generation/absorption parameter, magnetic field parameter, and Eckert number, are obtained. The results signify that velocity profiles of stretching divergent channels decrease with a boost in Hartmann number, while for the same case, temperature curves constantly enhance. The shear stress rate is augmented with Hartmann number for stretching convergent/divergent channels. An admirable agreement has been noticed on comparing present results with earlier studies.

引用

页码：457 / 471

页数：15

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