Publication de 12 numéros par an
ISSN Imprimer: 1091-028X
ISSN En ligne: 1934-0508
Indexed in
Nonsimilar Combined Convection Flow over a Vertical Surface Embedded in a Variable Porosity Medium
RÉSUMÉ
The problem of combined forced-free convection flow over an isothermal vertical surface embedded in a variable porosity, porous medium with heat generation or absorption is formulated. The formulation includes the porous medium inertia and boundary effects, variable porosity, and thermal dispersion. The developed governing equations are transformed into nonsimilarity equations that have the advantage of producing their solution at the leading edge of the surface. These equations are then solved numerically subject to appropriate boundary and matching conditions by an implicit, finite-difference method. Comparisons with previously reported numerical and experimental work on the special case where no porous medium is present are performed and found to be in excellent agreement. A parametric study of the physical parameters involved in the problem such as the particle diameter-based Reynolds number, the Grashof number, the flow-based Reynolds number, and the heat generation or absorption coefficient is conducted. The obtained results are illustrated graphically to show interesting features of the solution. It is found that flow separation exists for the case of opposing flow condition and that the presence of thermal dispersion is essential for this type of problem.
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Rashad A., Chamkha A., Heat and mass transfer by natural convection flow about a truncated cone in porous media with Soret and Dufour effects, International Journal of Numerical Methods for Heat & Fluid Flow, 24, 3, 2014. Crossref
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Pal Dulal, Mondal Hiranmoy, Radiation effects on combined convection over a vertical flat plate embedded in a porous medium of variable porosity, Meccanica, 44, 2, 2009. Crossref
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Pal Dulal, Chatterjee Sewli, MHD NON-DARCY MIXED CONVECTION STAGNATION-POINT FLOW OF A MICROPOLAR FLUID TOWARDS A STRETCHING SHEET WITH RADIATION, Chemical Engineering Communications, 199, 9, 2012. Crossref
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Pal Dulal, Chatterjee Sewli, Heat and mass transfer in MHD non-Darcian flow of a micropolar fluid over a stretching sheet embedded in a porous media with non-uniform heat source and thermal radiation, Communications in Nonlinear Science and Numerical Simulation, 15, 7, 2010. Crossref
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Pal Dulal, Mondal Hiranmoy, Hydromagnetic non-Darcy flow and heat transfer over a stretching sheet in the presence of thermal radiation and Ohmic dissipation, Communications in Nonlinear Science and Numerical Simulation, 15, 5, 2010. Crossref
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Motsa S. S, Shateyi S., Successive linearisation analysis of unsteady heat and mass transfer from a stretching surface embedded in a porous medium with suction/injection and thermal radiation effects, The Canadian Journal of Chemical Engineering, 90, 5, 2012. Crossref
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Pal Dulal, Das Bhuban Chandra, Vajravelu Kuppalapalle, Influence of Non-linear Thermal Radiation on MHD Double-Diffusive Convection Heat and Mass Transfer of a Non-Newtonian Fluid in a Porous Medium, International Journal of Applied and Computational Mathematics, 3, 4, 2017. Crossref
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Nield Donald A., Bejan Adrian, Double-Diffusive Convection, in Convection in Porous Media, 2017. Crossref
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Afridi M. Idrees, Qasim Muhammad, Khan Najeeb Alam, Makinde Oluwole Daniel, Minimization of Entropy Generation in MHD Mixed Convection Flow with Energy Dissipation and Joule Heating: Utilization of Sparrow-Quack-Boerner Local Non-Similarity Method, Defect and Diffusion Forum, 387, 2018. Crossref
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Nield Donald A., Bejan Adrian, Double-Diffusive Convection, in Convection in Porous Media, 2013. Crossref
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Pal Dulal, Chatterjee Sewli, MHD MIXED CONVECTION STAGNATION-POINT FLOW OF A MICROPOLAR FLUID IN A POROUS MEDIUM TOWARDS A HEATED STRETCHING SHEET WITH THERMAL RADIATION, Mathematical Modelling and Analysis, 17, 4, 2012. Crossref
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Pal Dulal, Das Bhuban Chandra, Combined performance of non-linear thermal radiation and chemical reaction on MHD convective heat and mass transfer of a micropolar fluid over a non-isothermal surface, International Journal of Ambient Energy, 43, 1, 2022. Crossref