Influence of chemical reaction on heat and mass transfer by natural convection from vertical surfaces in porous media considering Soret and Dufour effects

Postelnicu, A.

doi:10.1007/s00231-006-0132-8

Cited by 176 publications

(92 citation statements)

References 11 publications

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“…Mansour, et al (2008) analyzed the effects of chemical reaction and thermal stratification on MHD free convection heat and mass transfer over a vertical stretching surface embedded in a porous media considering Soret and Dufour numbers. Postelnicu (2007) reported on the influence of chemical reaction on heat and mass transfer by natural convection from vertical surfaces in porous media considering Soret and Dufour effects.…”

Section: Introductionmentioning

confidence: 99%

Non-Similar Solutions for Heat and Mass Transfer from a Surface Embedded in a Porous Medium for Two Prescribed Thermal and Solutal Boundary Conditions

Aly¹,

Chamkha²

2010

International Journal of Chemical Reactor Engineering

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This work studies the effects of homogeneous chemical reaction and thermal radiation on coupled heat and mass transfer by free convection from a surface embedded in a fluid-saturated porous medium. Two different cases of thermal and solutal boundary conditions, namely the prescribed surface temperature and concentration (PSTC) case and the prescribed heat and mass fluxes (PHMF) case are considered. The governing boundary-layer equations are formulated and transformed into a set of non-similar equations. The resulting equations are solved numerically by an accurate and efficient implicit finite-difference method. The obtained results compared with previously published work and found to be in excellent agreement. A representative set of results is displayed graphically to illustrate the influence of the radiation parameter, chemical reaction parameter and the permeability of the porous medium on the velocity, temperature and concentration fields as well as the local skin-friction coefficient, local Nusselt number and the local Sherwood number.

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Section: Introductionmentioning

confidence: 99%

Non-Similar Solutions for Heat and Mass Transfer from a Surface Embedded in a Porous Medium for Two Prescribed Thermal and Solutal Boundary Conditions

Aly¹,

Chamkha²

2010

International Journal of Chemical Reactor Engineering

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“…A diffusion-thermo (Dufour) effect is energy flux can be generated by temperature gradient as well as composition gradient. Postelnicu (2007) studied the Soret and Dufour effects over a vertical surface in the presence of convection and chemical reaction. Beg et al (2009) considered the Soret and Dufour effects on MHD heat and mass transfer of a saturated flow over a…”

Section: Introductionmentioning

confidence: 99%

Soret and Dufour Effects on MHD Radiative Heat and Mass Transfer Flow of a Jeffrey Fluid Over a Stretching Sheet

Narayana¹,

Babu²,

Venkateswarlu³

2017

Frontiers in Heat and Mass Transfer

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This paper studies the combined effects of Soret (thermal-diffusion) and Dufour (diffusion-thermo) on magnetohydrodynamics (MHD) boundary layer flow of a Jeffrey fluid past a stretching surface with chemical reaction and heat source. Using the similarity transformations, the governing equations are transformed into a set of non-linear ordinary differential equations (ODE's). The resulting equations are then solved numerically by using the shooting method along with Runge-Kutta fourth order integration scheme. Numerical results for the velocity, temperature and concentration distributions as well as the skin-friction coefficient, Nusselt number and Sherwood number are discussed in detail and displayed graphically for various physical parameters. The results indicate that the influence of Soret and Dufour numbers are significantly active in the study of nonNewtonian fluid flows. The accuracy of the numerical method is tested by comparing with previously published work as a limiting case (for viscous flow) and the results are found to be in excellent agreement.

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“…Aziz [10] studied the thermal -diffusion and diffusion -thermo effects on the heat and mass transfer characteristics of free convection past a continuously stretching permeable surface in the presence of magnetic field and radiation. Postelnicu [11] has discussed the influence of chemical reaction on heat and mass transfer by natural convection from vertical surfaces embedded in fluid -saturated porous medium considering Soret and Dufour effects . Cheng [12] studied the Soret and Dufour effects on natural convection heat and mass transfer from a vertical cone in a porous medium.…”

Section: Introductionmentioning

confidence: 99%

Influence of Chemical Reaction, Heat Source, Soret and Dufour Effects on Heat And Mass Transfer in Boundary Layer Flow Over a Stretching Cylinder Embedded in a Porous Medium using Brinkman-Forchheimer Extended Darcy Model

Sharma¹,

Aich²

2015

IJIRSET

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Influence of chemical reaction on heat and mass transfer by natural convection from vertical surfaces in porous media considering Soret and Dufour effects

Cited by 176 publications

References 11 publications

Non-Similar Solutions for Heat and Mass Transfer from a Surface Embedded in a Porous Medium for Two Prescribed Thermal and Solutal Boundary Conditions

Non-Similar Solutions for Heat and Mass Transfer from a Surface Embedded in a Porous Medium for Two Prescribed Thermal and Solutal Boundary Conditions

Soret and Dufour Effects on MHD Radiative Heat and Mass Transfer Flow of a Jeffrey Fluid Over a Stretching Sheet

Influence of Chemical Reaction, Heat Source, Soret and Dufour Effects on Heat And Mass Transfer in Boundary Layer Flow Over a Stretching Cylinder Embedded in a Porous Medium using Brinkman-Forchheimer Extended Darcy Model

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