COMPUTATION OF TRANSIENT RADIATIVE REACTIVE THERMOSOLUTAL MAGNETOHYDRODYNAMIC CONVECTION IN INCLINED MHD HALL GENERATOR FLOW WITH DISSIPATION AND CROSS DIFFUSION

The present article investigates the collective influence of chemical reaction, viscous dissipation and Hall current magnetic effects on timedependent radiative magnetohydrodynamic flow, heat and mass transfer from an inclined wall embedded in a homogenous, isotropic highpermeability porous medium. The model developed is relevant to near wall magnetohydrodynamic energy generator transport phenomena \nin which chemical corrosion effects may arise during operations. The governing non-linear partial differential equations for mass, momentum, \nenergy and species conservation are transformed into a system of coupled non-linear dimensionless partial differential equations with \nappropriate similarity variables. The normalized conservation equations are then solved with a robust finite element method (MATLABFEM) subject to corresponding initial and boundary conditions. Important dimensionless parameters emerging are Eckert number, thermal \nGrashof number, solutal Grashof number, magnetic body force parameter, Hall parameter, permeability parameter, Dufour number, Soret \nnumber, time, radiation-conduction parameter, chemical reaction parameter, heat absorption parameter, Prandtl number, Schmidt number \nand wall angle. Primary velocity is enhanced with Eckert number, thermal Grashof number, solutal Grashof number, Hall parameter, \npermeability parameter, Dufour number, Soret number, radiation-conduction parameter and time whereas it is reduced with first order \nchemical reaction parameter, heat absorption, magnetic body force parameter, Prandtl number, Schmidt number and wall inclination. \nSecondary velocity is elevated with Eckert number, solutal Grashof number, thermal Grashof number, magnetic body force parameter, Hall \nparameter, radiation-conduction parameter, Dufour number, Soret number and time whereas it is suppressed with reaction parameter, heat \nabsorption, Prandtl number, Schmidt number and wall inclination. Temperature is enhanced with Eckert number, Dufour number, heat \nabsorption, radiation-conduction parameter and time whereas it is depressed with Prandtl number. Species concentration is reduced with \nincreasing chemical reaction parameter (destructive homogenous reaction) and Schmidt number whereas it is elevated with Soret number \nand time. Extensive discussion of the finite element formulation, convergence and validation is provided Skin friction, Nusselt number and \nSherwood number distributions are also provided for selected parameter variation. Validation of solutions with published literature is also \nincluded for several special cases, namely non-reactive, non-dissipative flow in the absence of heat generation or absorption. Further \nvalidation is included using a multi-step differential transform method (MS-DTM). The present simulations provide an interesting insight into \ncomplex fluid/thermal/species diffusion characteristics in the boundary layer region of relevance to working MHD generator systems.