Free Convection and Mass Transfer Flow through a Porous Medium Bounded by an Infinite Vertical Porous Plate with Constant Heat Flux

Raptis, A.; Kafousias, N. G.; Massalas, C.V.

doi:10.1002/zamm.19820620911

Cited by 69 publications

(27 citation statements)

References 3 publications

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“…It occurs not only at high temperatures but also due to radiative heat transfer. An unsteady flow past a moving plate in the presence of free convection and radiation is investigated in [7].Free convective and concentration transfer of MHD through a porous medium with constant heat flux along an infinite vertical porous plate have been studied in [8]. The interaction between free convection and thermal radiation in a boundary layer flow past a vertical porous plate has been investigated in [9].The effects of thermal radiation on free convection in a porous medium of horizontal surfaces have been studied in [10].Free convection boundary layer flow with thermal radiation and mass transfer past a moving plate has been studied in [11].…”

Section: Introductionmentioning

confidence: 99%

The Effect of MHD on Free Convection with Periodic Temperature and Concentration in the Presence of Thermal Radiation and Chemical Reaction

Zigta

Koya

2017

International Journal of Applied Mechanics and Engineering

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This paper studies the effect of magneto hydrodynamics on unsteady free convection between a pair of infinite vertical Couette plates. The temperature of the plates and concentration between the plates vary with time. Convection between the plates is considered in the presence of thermal radiation and chemical reaction. The solution is obtained using perturbation techniques. These techniques are used to transform nonlinear coupled partial differential equations to a system of ordinary differential equations. The resulting equations are solved analytically. The solution is expressed in terms of power series with some small parameter. The effect of various parameters, viz., velocity, temperature and concentration, has been discussed. Mat lab code simulation study is carried out to support the theoretical results. The result shows that as the thermal radiation parameter R increases, the temperature decreases near the moving porous plate while it approaches to a zero in the region close to the boundary layer of the stationary plate. Moreover, as the modified Grashof number, i.e., based on concentration difference, increases, the velocity of the fluid flow increases hence the concentration decreases. An increase in both the chemical reaction parameter and Schmidt number results in decreased concentration.

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Section: Introductionmentioning

confidence: 99%

The Effect of MHD on Free Convection with Periodic Temperature and Concentration in the Presence of Thermal Radiation and Chemical Reaction

Zigta

Koya

2017

International Journal of Applied Mechanics and Engineering

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“…The flow through porous medium is very important particularly in the fields of agricultural engineering and technology for irrigation processes, especially in petroleum industry to study petroleum extraction process and transport, also in chemical engineering and technology for filtration and purification processes. A succession of explorations made by Raptis et al 1,2,3 into the study of two-dimensional flow through porous medium past an infinite vertical wall. Many authors [4][5][6][7][8][9] discussed an oscillatory three-dimensional flow through a porous medium.…”

Section: Introductionmentioning

confidence: 99%

Hall effects on MHD Convective flow of Visco-elastic fluid through a rotating porous channel

Raju¹,

Prasad²

2016

jusps-A

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In this paper, we consider hydromagnetic convective flow of an electrically conducting visco-elastic fluid through a rotating porous channel taking hall current into account. The governing equations are framed using Brinkman model. The exact solutions of the velocity and the temperature distributions are evaluated analytically using Laplace transform technique and which consist of the both steady and transient states. Thought is centered on the physical character of the solutions, and the construction of the various kinds of boundary layers outward appearance on the plates. The ultimate steady state velocity and temperature distributions are numerically discussed for various values of the flow parameters. The shear stresses and the Nusselt number are tabulated and discussed.

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“…They also found that the velocity profiles are similar in the absence of free stream and differential system gave rise to non-similar velocity profiles in the boundary layer. Raptis and Kafousian [21] have investigated the problem of magneto-hydrodynamic free convection flow and mass transfer through a porous medium bounded by an infinite vertical porous plate with constant heat flux. Postelnicu [22] discussed magnetic field effect on heat and mass transfer by natural convection from vertical surfaces in porous media and found that local Nusselt number and local Sherwood number increases with the increasing values of magnetic field parameter.…”

Section: Introductionmentioning

confidence: 99%

MHD Flow, Heat and Mass Transfer about a Horizontal Cylinder in Porous Medium

Sharma¹,

Konwar²

2014

IJIRSET

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MHD flow, heat and mass transfer through porous media have seen a tremendous increase in research attention. This rapidly increasing research activity has been due to the increasing number of practical applications on porous media in chemical reactors, the underground spread of pollutant, many modern industries ranging from micro to macro and many other heat transfer processes. The problem of flow, heat and mass transfer about a horizontal circular cylinder in porous medium is considered in this study. Governing boundary layer equations are first transformed into ordinary differential equations and are solved by using Matlab's built in solver bvp4c. Velocity, temperature and concentration profiles are shown graphically for different values of parameters involved in the dimensionless equations and discussed in detail.

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Free Convection and Mass Transfer Flow through a Porous Medium Bounded by an Infinite Vertical Porous Plate with Constant Heat Flux

Cited by 69 publications

References 3 publications

The Effect of MHD on Free Convection with Periodic Temperature and Concentration in the Presence of Thermal Radiation and Chemical Reaction

The Effect of MHD on Free Convection with Periodic Temperature and Concentration in the Presence of Thermal Radiation and Chemical Reaction

Hall effects on MHD Convective flow of Visco-elastic fluid through a rotating porous channel

MHD Flow, Heat and Mass Transfer about a Horizontal Cylinder in Porous Medium

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