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Journal of Porous Media
Impact-faktor: 1.49 5-jähriger Impact-Faktor: 1.159 SJR: 0.43 SNIP: 0.671 CiteScore™: 1.58

ISSN Druckformat: 1091-028X
ISSN Online: 1934-0508

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Journal of Porous Media

DOI: 10.1615/JPorMedia.v13.i2.60
pages 159-170

VISCOUS DISSIPATION AND OHMIC HEATING EFFECTS ON MAGNETOHYDRODYNAMIC MIXED CONVECTION ALONG A VERTICAL MOVING SURFACE EMBEDDED IN A FLUID-SATURATED POROUS MEDIUM

Ahmed M. Rashad
Department of Mathematics, Aswan University, Faculty of Science, Aswan, 81528, Egypt
Ahmed Y. Bakier
Department of Mathematics, Assiut University, Assiut, Egypt
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

ABSTRAKT

The effects of both first- and second-order resistance, due to the solid matrix of non-Darcy porous media, viscous dissipation, Ohmic heating, and temperature-dependent viscosity on laminar mixed convection boundary layer flow and heat transfer on a continuously moving vertical surface, have been studied. The fluid viscosity is assumed to vary as an inverse linear function of temperature under the action of a transverse magnetic field. Local similarity solutions are obtained for the boundary layer equations governing the flow along a moving vertical isothermal surface with uniform velocity. The effects of various parameters, such as the first- and second-order solid matrix resistance, magnetic field, Eckert number, buoyancy force, and viscosity/temperature parameter, on the velocity and temperature profiles as well as the skin friction coefficient and wall heat transfer are presented graphically and in tabular form.