Thermal diffusion and diffusion thermo effects on unsteady MHD fluid flow past a moving vertical plate embedded in porous medium in the presence of Hall current and rotating system. (English) Zbl 1426.76679

Jithender Reddy, G.; Srinivasa Raju, R.; Manideep, P.; Anand Rao, J.

Trans. A. Razmadze Math. Inst. 170, No. 2, 243-265 (2016).

Summary: In this research paper, numerical study of unsteady magnetohydrodynamic natural convective heat and mass transfer of a viscous, rotating fluid, electrically conducting and incompressible fluid flow past an impulsively moving vertical plate embedded in porous medium in the presence of ramped temperature, thermal radiation, hall current, thermal diffusion and diffusion thermo is investigated. The fundamental governing dimensionless coupled boundary layer partial differential equations are solved by an efficient Element Free Galerkin Method (EFGM). Computations were performed for a wide range of some important governing flow parameters viz., Hall current, rotation, thermal diffusion (Soret) and diffusion thermo (Dufour). The effects of these flow parameters on primary and secondary velocity, temperature and concentration fields for externally heating and cooling of the plate are shown graphically. Finally, the effects of these flow parameters on the rate of heat, mass transfer and shear stress coefficients at the wall are prepared through tabular forms for heating and cooling of the plate. Also, these are all discussed for ramped temperature and isothermal plates. We have shown that some results are in good agreement with earlier reported studies.

MSC:

76R50	Diffusion
76W05	Magnetohydrodynamics and electrohydrodynamics
76S05	Flows in porous media; filtration; seepage
76U05	General theory of rotating fluids
80A20	Heat and mass transfer, heat flow (MSC2010)

Keywords:

heat transfer; MHD; Hall current; rotation; element free Galerkin method

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