VISCOUS DISSIPATION, HALL CURRENT AND ION SLIP EFFECTS ON AN UNSTEADY MHD FLOW OVER AN INCLINED PLATE

Year 2026, Volume: 16 Issue: 2, 154 - 168, 03.02.2026

S. Aiswarya K. Bhuvaneshwari

Abstract

In this study, we have examined the effects of Hall current and ion slip on an unsteady MHD flow of a viscous, electrically conducting incompressible fluid over a porous medium bounded by an infinite inclined plate in the presence of viscous dissipation. Closed-form solutions are obtained for velocity, temperature, and concentration profiles using the regular perturbation technique. The effect of various non dimensional parameters such as Hall current ($\beta_{e}$), Ion slip parameter($\beta_{i}$), Eckert number (Ec), Grashof number (Gr), Magnetic parameter(M), Modified Grashof number (Gm), Heat source parameter(Q), Dufour number (Du), Schmidt number (Sc), Permeability parameter (K), Radiation parameter(N), and Chemical Reaction parameter ($\nu$), on velocity, temperature and concentration were discussed graphically. The results reveal that the Hall current increases velocity and decreases temperature by creating a secondary flow that reduces resistance and redistributes energy. In contrast, the ion-slip effect reduces velocity while increasing temperature due to increased resistance and internal energy dissipation.

Keywords

Hall current , ion slip , inclined plate , porous medium , heat and mass transfer , MHD , chemical reaction , Dufour effect

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