Affiliation:
1. Department of Studies and Research in Mathematics, Kuvempu University, Shankaraghatta, Shimoga, Karnataka, 577 451, India
Abstract
A mathematical analysis has been performed for heat and mass transfer
of a time-dependent MHD flow of an electrically conducting viscoelastic fluid in nonuniform
vertical channel with convective boundary condition. The fluid flow is considered between
a vertical long wavy wall and a parallel flat wall saturated with the porous medium. The
effects of thermal radiation, heat absorption, chemical reaction, and Hall current are taken
into account. The prevailing nonlinear partial differential equations are derived by considering
Boussinesq approximation, and the same equations are solved analytically using perturbation
technique. Further the expressions for skin friction, Nusselt number, and Sherwood number
are presented. The effects of various pertinent parameters on different flow fields are analyzed
graphically and tabularly. It is found that effects of Hall parameter and Biot number are
unfavorable on velocity profiles, but this trend is reverse for the effect of thermal and solutal
Grashof numbers. The expressions of different flow fields satisfy the imposed boundary
conditions, which is shown in all graphs; this implies accuracy of the solution.
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