Unsteady MHD natural convection from a heated vertical porous plate in a micropolar fluid with Joule heating, chemical reaction and radiation effects

Chamkha, Ali J.; Mohamed, R. A.; Ahmed, Sameh E.

doi:10.1007/s11012-010-9321-0

Cited by 136 publications

(56 citation statements)

References 16 publications

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“…Bakr (2011) discussed the effects of chemical reaction on MHD free convection and mass transfer flow of a micro polar fluid with oscillatory plate velocity and constant heat source in a rotating frame of reference. Chamkha et al (2011) discussed the effects of Joule heating, chemical reaction and thermal radiation on unsteady hydromagnetic natural convection boundary layer flow with heat and mass transfer of a micro polar fluid from a semi-infinite heated vertical porous plate in the presence of a uniform transverse magnetic field. Bhattacharya and Layek (2012) obtained similarity solution of MHD boundary layer flow with mass diffusion and chemical reaction over a porous flat plate with suction/blowing.…”

Section: Introductionmentioning

confidence: 99%

Heat and Mass Transfer Effects on Unsteady MHD Natural Convection Flow of a Chemically Reactive and Radiating Fluid through a Porous Medium Past a Moving Vertical Plate with Arbitrary Ramped Temperature

Seth

Sharma

Kumbhakar

2016

JAFM

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Investigation of unsteady hydromagnetic natural convection flow with heat and mass transfer of a viscous, incompressible, electrically conducting, chemically reactive and optically thin radiating fluid past an exponentially accelerated moving vertical plate with arbitrary ramped temperature embedded in a fluid saturated porous medium is carried out. Exact solutions of momentum, energy and concentration equations are obtained in closed form by Laplace transform technique. The expressions for the shear stress, rate of heat transfer and rate of mass transfer at the plate for both ramped temperature and isothermal plates are derived. The numerical values of fluid velocity, fluid temperature and species concentration are displayed graphically whereas those of shear stress, rate of heat transfer and rate of mass transfer at the plate are presented in tabular form for various values of pertinent flow parameters. It is found that, for isothermal plate, the fluid temperature approaches steady state when 1.5 t  . Consequently, the rate of heat transfer at isothermal plate approaches steady state when 1.5 t  .

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Section: Introductionmentioning

confidence: 99%

Heat and Mass Transfer Effects on Unsteady MHD Natural Convection Flow of a Chemically Reactive and Radiating Fluid through a Porous Medium Past a Moving Vertical Plate with Arbitrary Ramped Temperature

Seth

Sharma

Kumbhakar

2016

JAFM

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“…The oscillatory boundary layer flow with constant heat source in the case of MHD free convection currents and mass transfer has been considered by Rahman and Sattar [27]. A comprehensive review of the subject and applications of micropolar fluid mechanics was given by Khonsari and Brewe [21], Kim and Lee [22], Chamkha et al [6] and Bachok et al [4].…”

Section: Introductionmentioning

confidence: 99%

MHD micropolar fluid flow with thermal radiation and thermal diffusion in a rotating frame

Kundu

Das

Jana

2014

Bull. Malays. Math. Sci. Soc.

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This work is devoted to investigate the influences of thermal radiation and thermal diffusion on hydromagnetic free convection heat and mass transfer flow of a micropolar fluid with constant wall heat and mass transfer in a porous medium bounded by a semi-infinite porous plate in a rotating frame of reference. The dimensionless governing equations for this investigation are solved analytically using small perturbation approximation. With the help of graphs, the effects of the various important parameters entering into the problem on the velocity, microrotation, temperature, and concentration fields within the boundary layer are separately discussed. Finally the effects of the pertinent parameters on the skin friction coefficient, couple stress coefficient, Nusselt number, and Sherwood number at the wall are presented numerically in tabular form. In addition, the results obtained show that these parameters have significant influence on the flow, heat and mass transfer.

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“…Equations 1-4 with the boundary conditions (6) were solved numerically by employing the finite difference method (Chamkha and Al-Naser 2001;Mansour and Gorla 1999;Chamkha et al 2010). Forward difference approach was used to approximate the first derivative for the time and central difference approaches were used to approximate the second derivatives in both the X -and Y -directions.…”

Section: Methodsmentioning

confidence: 99%

“…Forward difference approach was used to approximate the first derivative for the time and central difference approaches were used to approximate the second derivatives in both the X -and Y -directions. The details of the present method are presented in the papers (Chamkha and Al-Naser 2001;Mansour and Gorla 1999;Chamkha et al 2010). The iteration process is terminated if the following condition satisfies…”

Section: Methodsmentioning

confidence: 99%

Unsteady Natural Convection, Heat and Mass Transfer in Inclined Triangular Porous Enclosures in the Presence of Heat Source or Sink: Effect of Sinusoidal Variation of Boundary Conditions

et al. 2011

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The problem of double-diffusive convection in inclined triangular porous enclosures with sinusoidal variation of boundary conditions in the presence of heat source or sink was discussed numerically. The dimensionless governing equations of the problem were solved numerically by using finite difference method. The effects of governing parameters, namely, the dimensionless time parameter, various values of the inclination angle, Darcy number, the heat generation/absorption parameter, the buoyancy parameter and the amplitude wave length ratio on the streamlines, temperature and concentration contours as well as the velocity component in the x-direction at the triangle mid-section, the average Nusselt and Sherwood numbers at the bottom wall of the triangle for various values of aspect ratio were considered. The present results are validated by favorable comparisons with previously published results. All the results of the problem were presented in graphical and tabular forms and discussed. List of Symbols a Dimensional amplitude of sinusoidal change (m)A Amplitude wave length ratio (a/H )

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Unsteady MHD natural convection from a heated vertical porous plate in a micropolar fluid with Joule heating, chemical reaction and radiation effects

Cited by 136 publications

References 16 publications

Heat and Mass Transfer Effects on Unsteady MHD Natural Convection Flow of a Chemically Reactive and Radiating Fluid through a Porous Medium Past a Moving Vertical Plate with Arbitrary Ramped Temperature

Heat and Mass Transfer Effects on Unsteady MHD Natural Convection Flow of a Chemically Reactive and Radiating Fluid through a Porous Medium Past a Moving Vertical Plate with Arbitrary Ramped Temperature

MHD micropolar fluid flow with thermal radiation and thermal diffusion in a rotating frame

Unsteady Natural Convection, Heat and Mass Transfer in Inclined Triangular Porous Enclosures in the Presence of Heat Source or Sink: Effect of Sinusoidal Variation of Boundary Conditions

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