Coupled heat and mass transfer by natural convection from vertical surfaces in porous media

Lai, F. C.; Kulacki, F. A.

doi:10.1016/0017-9310(91)90027-c

Cited by 120 publications

(42 citation statements)

References 9 publications

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“…The flow phenomenon is relatively complex rather than that of the pure thermal convection process. Underground spreading chemical wastes and other pollutants, grain storage ,evaporation cooling and solidification are the few other application areas where the combined thermo-solutal natural convection in porous media are observed .Combined heat and mass transfer by free convection under boundary layer approximations has been studied by Bejan and Khair (1985), Lai and Kulacki (1991) and Murthy and Singh(1990).Coupled heat and mass transfer by mixed convection in Darcian fluid-saturated porous media has been analyzed by Lai (1971). The free convection heat and mass transfer in a porous enclosure has been studied recently by Angirasa et al (1997).…”

Section: Introductionmentioning

confidence: 99%

Effect of Chemical Reaction and Radiation on Unsteady Convective Heat and Mass Transfer Flow of a Viscous Fluid in a Vertical Wavy Channel With Oscillatory Flux and Heat Sources

Kamalakar¹,

Rao²,

Rao³

2016

Frontiers in Heat and Mass Transfer

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In this paper we discuss the effect of chemical reaction and thermal radiation on unsteady free convective heat and mass transfer flow through a porous medium in a vertical wavy channel. The unsteadiness in the flow is due to the oscillatory flux in the flow region. The coupled equations governing the flow, heat and mass transfer have been solved by using a perturbation technique with the slope  of the wavy wall as the perturbation parameter. The expression for the velocity, the temperature, the concentration, the rate of heat and mass transfer are derived and are analyzed for different variations of the governing parameters G, R, M, D -1 , , N, N1, ,  , k, x and t.

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Section: Introductionmentioning

confidence: 99%

Effect of Chemical Reaction and Radiation on Unsteady Convective Heat and Mass Transfer Flow of a Viscous Fluid in a Vertical Wavy Channel With Oscillatory Flux and Heat Sources

Kamalakar¹,

Rao²,

Rao³

2016

Frontiers in Heat and Mass Transfer

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“…[3] and Khair [4]. Lai and Kulacki [5] used the series expansion method to investigate coupled heat and mass transfer in natural convection from a sphere in a porous medium. Comprehensive reviews of porous media thermal/species convection have been presented by Nield and Bejan [3], vafai [6] and Pop and Ingham [7].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Soret and Dufour Effects on Unsteady MHD Convective Flow past a Semi-Infinite Vertical Porous Plate via Finite Difference Method

Gadipally¹,

Gundagani²

2014

IJAPM

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An analysis is made for the unsteady magnetohydrodynamic (MHD) free convection flow of a viscous, incompressible, electrically conducting fluid past a semi infinite vertical porous moving plate taking in to account the mass transfer with variable viscosity and thermal conductivity. An implicit finite difference method is used to solve the unsteady, non linear and coupled governing equations. A parametric study illustrating the influence of different flow parameters on velocity, temperature and concentration are investigated. Numerical results are presented for various parameters.

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“…A detailed account of the developments on the subject has been compiled by Mehmood and Ali (2007). Combined heat and mass transfer by free convection and boundary layer approximation has been studied by Bejan and Khair (1985) and Kulacki (1991). Cooper et al (1993) have conducted a detailed study on the fluid mechanics of oscillatory and modulated flows associated with applications in heat and mass transfer.…”

Section: Introductionmentioning

confidence: 99%

Rarefaction and Darcy effects on the hydromagnetic flow of radiating and reacting fluid in a vertical channel

Chand¹,

Kumar²,

Sharma³

2013

Turkish J Eng Env Sci

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An investigation of the combined influence of rarefaction and Darcy effects on the flow of oscillatory MHD viscous, incompressible, chemically reacting, and electrically conducting fluid in a vertical channel is carried out. The fluid is assumed to be gray and absorbing and emitting radiation but to be a nonscattering medium. The flow is assumed to be laminar and hydrodynamically and thermally fully developed. The Navier-Stokes, energy, and concentration equations, which are accompanied by appropriate velocity-slip and temperature-jump boundary conditions, are analytically solved.It is found that rarefaction effects significantly influence the flow and thermal fields such that mass flow and heat transfer rates are increased as compared to the continuum regime.

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Coupled heat and mass transfer by natural convection from vertical surfaces in porous media

Cited by 120 publications

References 9 publications

Effect of Chemical Reaction and Radiation on Unsteady Convective Heat and Mass Transfer Flow of a Viscous Fluid in a Vertical Wavy Channel With Oscillatory Flux and Heat Sources

Effect of Chemical Reaction and Radiation on Unsteady Convective Heat and Mass Transfer Flow of a Viscous Fluid in a Vertical Wavy Channel With Oscillatory Flux and Heat Sources

Analysis of Soret and Dufour Effects on Unsteady MHD Convective Flow past a Semi-Infinite Vertical Porous Plate via Finite Difference Method

Rarefaction and Darcy effects on the hydromagnetic flow of radiating and reacting fluid in a vertical channel

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