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Combined effects of Joule heating and nonuniform heat source/sink on unsteady MHD mixed convective flow over a vertical stretching surface embedded in a Darcy-Forchheimer porous medium

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Propulsion and Power Research 2022年第2期11卷 276-292页

作者： B.K.Sharma Rishu Gandhi Department of Mathematics Birla Institute of Technology and SciencePilani333031RajasthanIndia

This paper deals with an unsteady magnetohydrodynamics(MHD)heat and masstransfer for a viscous incompressible fluid through a vertical stretching surface embedded ina Darcy-Forchheimer porous medium in the presence of a non-uniform heat source/sink andfirst-order chemical *** porous surface is subjected to a uniform transverse *** influence of velocity,thermal,and concentration slip is also *** governing equations are coupled non-linear partial differential equations,which have been converted via similarity transformation into a set of ordinary differential *** resultantsystem of non-linear ordinary differential equations has been solved numerically with the helpof the“MATLAB”BVP4C *** are presented graphically to analyze the effects ofvarious physical parameters discovered in the problem such as Hartmann number(M),Forchheimer number(Fr),Grashof number(Gr),solutal Grashof number(Gc),suction parameter(S),porosity parameter(el),dimensionless velocity slip(Sv),Prandtl number(Pr),dimensionless thermal slip(St),space-dependent heat source/sink parameter(eA1),temperature-dependent heat source/sink(eB)1),Eckert number(Ec),Schmidt number(Sc),chemical reaction parameter(g),unsteadiness parameter(A),and dimensionless concentration slip(Sc)on non-dimensionalvelocity ec0ðhÞ,temperature zðhÞ,and concentration efðhÞ*** influence of these parameters on skin-friction coefficient(C)f),Nusselt number(Nu)x),and Sherwood number(Sh)x)areexpressed in tabular *** is observed that an enhancement in Fr and el results in the declination of the velocity *** is an enhancement in temperature with an increment in theeA)1 and eB)*** physical representation of flow characteristics that appeared in the problem ispresented using various graphs to depict real-world applications in industrial and *** results were compared to previous studies,revealing that the two are in *** nov

关键词： Magnetohydrodynamics(MHD) Unsteady Heat and mass transfer non-darcian porous medium Heat source Joule effect

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