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国际流体力学研究期刊
ESCI SJR: 0.22 SNIP: 0.446 CiteScore™: 0.5

ISSN 打印: 1064-2277
ISSN 在线: 2152-5110

国际流体力学研究期刊

DOI: 10.1615/InterJFluidMechRes.v35.i5.30
pages 434-444

Unsteady Free Convection in a Fluid Past a Vertical Plate Immersed in a Porous Medium

Mohamed F. El-Amin
Mathematics Department, Aswan Faculty of Science, South Valley University, Aswan, 81258; King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
Rama Subba Reddy Gorla
Department of Mechanical Engineering, Cleveland State University, Cleveland, OH, 44115 USA; Department of Mechanical Engineering, University of Akron, Akron, Ohio 44325, USA; Department of Mechanical & Civil Engineering, Purdue University Northwest, Westville, IN 46391, USA

ABSTRACT

In this work we examine the problem of unsteady free convection from a vertical flat plate to a fluid-saturated porous medium. The flow field is modeled by Darcy−Brinkman−Forchheimer model. Boundary layer and Boussinesq approximations have been incorporated. Numerical calculations are carried out for the various parameters entering into the problem using the finite difference method. It is found that as time approaches infinity, the values of friction factor and heat transfer coefficient approach the steady-state values.