Thermal Diffusion Effect on MHD Mixed Convection Unsteady Flow of a Micro Polar Fluid Past a Semi-Infinite Vertical Porous Plate with Radiation and Mass Transfer

Mamatha, B.; Raju, M. C.; Varma, S. V. K.

doi:10.4028/www.scientific.net/jera.13.21

Cited by 18 publications

(10 citation statements)

References 37 publications

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“…Sengupta and Karmakar (2016) studied the MHD mixed convection chemically reactive flow in radiative heat generating medium with Soret effect. Mamatha et al (2015) carried out a study on thermal diffusion effect on MHD mixed convection unsteady flow of a micro polar fluid past a semi-infinite vertical porous plate with radiation and mass transfer. On the other hand an induced magnetic field modifies its original magnetic field as it generates its own magnetic field in the fluid, which modifies the motion of the fluids.…”

Section: Inroductionmentioning

confidence: 99%

Induced Magnetic Field Interaction in Free Convective Heat and Mass Transfer Flow of a Chemically Reactive Heat Generating Fluid With Thermo-Diffusion and Diffusion-Thermo Effects

Sengupta¹,

Karmakar²

2018

Frontiers in Heat and Mass Transfer

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An exact analysis is made to study the magnetohydrodynamics (MHD) free convective flow of an electrically conducting and chemically reacting Newtonian, incompressible, viscous fluid, flowing past an infinite vertical plate with combined heat and mass transfer. An inclined magnetic field of uniform strength is applied to the plate. As the value of the magnetic Reynolds number is of comparable order of magnitude, the effect of induced magnetic field is being considered and on the other hand due to weak voltage difference caused by the very low polarization charges, the influence of electric field is considered to be neglected. Cross-diffusion effects, like thermo-diffusion (Soret) and diffusion-thermo (Dufour) is being undertaken for this study due to high temperature and concentration gradients in the flow field. The influence of various physical parameters likes Hartmann number (Ha), heat generation (source) parameter (Qs), first order chemical reaction parameter (F), Soret number (Sr) and Dufour number (Du) in particular is studied. The parametric effect of various pertinent parameter on the velocity, temperature and concentration profiles as well as on the induced, current density, total magnetic field as well as on the skin-friction, Nusselt number () and Sherwood number () are discussed. The increase in the magnetic field parameter (Hartmann number (Ha)) decreases the fluid velocity and current density but increases the skin-friction as well as induced magnetic field. The first order chemical reaction is found to decrease both the velocity field as well as induced magnetic field. The Soret number (Sr) increases both the velocity field and induced magnetic field but Dufour number (Du) only increases the velocity field while decreases the induced magnetic field.

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Section: Inroductionmentioning

confidence: 99%

Induced Magnetic Field Interaction in Free Convective Heat and Mass Transfer Flow of a Chemically Reactive Heat Generating Fluid With Thermo-Diffusion and Diffusion-Thermo Effects

Sengupta¹,

Karmakar²

2018

Frontiers in Heat and Mass Transfer

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“…Sudheer Babu et al [10] described the effects of mass transfer on unsteady magneto-convection flow of micropolar fluid along a vertical moving porous plate through porous medium with viscous dissipation. Furthermore, detailed reviews of other investigations into radiative heat transfer in micropolar flows are provided by Reddy [11], Olajuwon et al [12] and Mamatha et al [13].…”

Section: Introductionmentioning

confidence: 99%

Heat and Mass Transfer on the Unsteady MHD Flow of Chemically Reacting Micropolar Fluid with Radiation and Joule Heating

Shamshuddin¹

2017

IJTAM

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To explore numerical simulation of transport in rheological materials processing, in the current paper, a finite element computational solution is presented for magnetohydrodynamic (MHD), incompressible, radiative and chemicallyreacting micropolar fluid flow, heat and mass transfer adjacent to a vertical porous plate embedded in a saturated homogenous porous medium. Rosseland's diffusion approximation is used to describe the radiative heat flux in the energy equation. A Darcy model is employed for the porous medium. The homogeneous chemical reaction of first order is accounted for in the mass diffusion equation. The numerical solutions of the system of non-linear partial differential equations which are rendered into non-dimensional form are obtained using a Galerkin formulation with a weighted residual scheme. The impact of Eringen coupling number, radiation-conduction number, chemical reaction parameter, plate moving velocity parameter, magnetic parameter, thermal Grashof number, species (solutal) Grashof number, permeability parameter, Eckert number on linear velocity, micro-rotation, temperature and concentration profiles. Furthermore, the influence of selected thermo-physical parameters on friction factor, surface heat transfer and mass transfer rate is also tabulated. The finite element solutions are verified with solutions from several limiting cases in the literature. Interesting features in the flow are identified and interpreted.

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“…Kumar et al [19] examined magnetic field effect on transient free of charge convection flow through porous medium past an impulsively started vertical plate with fluctuating temperature and mass diffusion. Mamtha et al [20] discussed thermal diffusion effect on MHD mixed convection unsteady flow of a micro polar liquid past a semi-infinite vertical porous plate with radiation and mass transfer. Redddy et al [21] examined unsteady MHD free convection flow of a Kuvshinski fluid past a vertical porous plate in the presence of chemical reaction and heat source/sink.…”

Section: Introductionmentioning

confidence: 99%

Thermal Diffusive Free Convective Radiating Flow Over an Impulsively Started Vertical Porous Plate in Conducting Field

Vr¹,

Mc²,

Gss³

et al. 2016

J Phys Math

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In this manuscript we have studied the laminar convective heat and mass transfer flow of an incompressible, viscous, electrically conducting fluid over a fluid over an impulsively started vertical plate with conduction-radiation embedded in a porous medium in the occurrence of transverse magnetic field. An exact solution is derived by solving the dimensionless main coupled partial differential equations using Laplace transform technique. The properties of important physical parameters on the velocity, temperature, concentration, Skin friction, Sherwood number and Nusselt number have been studied through graphs.

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Thermal Diffusion Effect on MHD Mixed Convection Unsteady Flow of a Micro Polar Fluid Past a Semi-Infinite Vertical Porous Plate with Radiation and Mass Transfer

Cited by 18 publications

References 37 publications

Induced Magnetic Field Interaction in Free Convective Heat and Mass Transfer Flow of a Chemically Reactive Heat Generating Fluid With Thermo-Diffusion and Diffusion-Thermo Effects

Induced Magnetic Field Interaction in Free Convective Heat and Mass Transfer Flow of a Chemically Reactive Heat Generating Fluid With Thermo-Diffusion and Diffusion-Thermo Effects

Heat and Mass Transfer on the Unsteady MHD Flow of Chemically Reacting Micropolar Fluid with Radiation and Joule Heating

Thermal Diffusive Free Convective Radiating Flow Over an Impulsively Started Vertical Porous Plate in Conducting Field

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