THE INFLUENCE OF CHEMICAL REACTION AND VISCOUS DISSIPATION ON UNSTEADY MHD FREE CONVECTION FLOW PAST AN EXPONENTIALLY ACCELERATED VERTICAL PLATE WITH VARIABLE SURFACE CONDITIONS

被引：6

作者：

Kishore, P. M. ^{[1
]}

Bhanumathi, D. ^{[2
]}

Verma, S. Vijayakumar ^{[2
]}

机构：

[1] Narayana Engn Coll, Dept Math, Nellore 524001, AP, India

[2] Sri Venkateswara Univ, Dept Math, Tirupati 517502, Andhra Pradesh, India

来源：

CHEMICAL INDUSTRY & CHEMICAL ENGINEERING QUARTERLY | 2013年 / 19卷 / 02期

关键词：

MHD; free convection; viscous dissipation; implicit finite difference method; exponentially accelerated plate; variable temperature and chemical reaction; HEAT-TRANSFER; MASS-TRANSFER; STRETCHING SURFACE; POROUS-MEDIUM; RADIATION; FLUX;

D O I：

10.2298/CICEQ110730053K

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A numerical study is presented on the effects of chemical reaction and magnetic field on the unsteady free convection flow, heat and mass transfer characteristics in a viscous, incompressible and electrically conducting fluid past an exponentially accelerated vertical plate by taking into account the heat due to viscous dissipation. The problem is governed by coupled non-linear partial differential equations. The dimensionless equations of the problem have been solved numerically by the implicit finite difference method of Crank-Nicolson's type. The effects of governing parameters on the flow variables are discussed quantitatively with the aid of graphs for the flow field, temperature field, concentration field, skin-friction, Nusselt number and Sherwood number. It is found that under the influence of chemical reaction, the flow velocity as well as concentration distributions reduce, while the viscous dissipation parameter leads to increase the temperature.

引用

页码：181 / 193

页数：13

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