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Numerical Study of Free Convection in a Doubly Stratified Non-Darcy Porous Medium Using Spectral Quasilinearization Method

  • D. Srinivasacharya EMAIL logo , Sandile S. Motsa and O. Surender
Published/Copyright: May 12, 2015

Abstract

Free convection boundary layer flow past a semi-infinite vertical plate in a doubly stratified fluid-saturated porous medium in the presence of constant suction/injection is analyzed. The flow in the porous medium is described by the Brinkman–Forchheimer-based model. A suitable coordinate transformation is introduced, and the obtained system of non-similar, coupled and nonlinear partial differential equations is solved numerically using the spectral quasi-linearization method. The effects of buoyancy parameter, Darcy number, Forchheimer parameter, suction/injection parameter, thermal and solutal stratification parameters on the dimensionless velocity, temperature and concentration are presented graphically. Further, the local skin friction coefficient, heat and mass transfer rates are presented graphically.

PACS.: 44.30.+v

References

[1] D. A.Nield and A.Bejan, Convection in Porous Media, 4th edition, Springer-Verlag, New York, 2013.10.1007/978-1-4614-5541-7Search in Google Scholar

[2] O. D.Makinde and A.Ogulu, The effect of thermal radiation on the heat and mass transfer flow of a variable viscosity fluid past a vertical porous plate permeated by a transverse magnetic field, Chem. Eng. Commun. 195 (2008), 15751584.10.1080/00986440802115549Search in Google Scholar

[3] C. Y.Cheng, Soret and Dufour effects on natural convection heat and mass transfer from a vertical cone in a porous medium, Int. Commun. Heat Mass Transfer36 (2009), 10201024.10.1016/j.icheatmasstransfer.2009.07.003Search in Google Scholar

[4] D.Srinivasacharya and Ch.RamReddy, Heat and mass transfer by natural convection in a doubly stratified non-Darcy micropolar fluid, Int. Commun. Heat Mass Transfer37 (2010), 873880.10.1016/j.icheatmasstransfer.2010.05.001Search in Google Scholar

[5] V. R.Prasad, B.Vasu, O. A.Beg and R. D.Parshad, Thermal radiation effects on magnetohydrodynamic free convection heat and mass transfer from a sphere in a variable porosity regime, Commun. Nonlinear Sci. Numer. Simul. 17 (2012), 654671.10.1016/j.cnsns.2011.04.033Search in Google Scholar

[6] A. H.Srinivasa and A. T.Eswara, Unsteady free convection flow and heat transfer from an isothermal truncated cone with variable viscosity, Int. J. Heat Mass Transfer57 (2013), 411420.10.1016/j.ijheatmasstransfer.2012.10.054Search in Google Scholar

[7] C. Y.Cheng, Combined heat and mass transfer in natural convection flow from a vertical wavy surface in a power-law fluid saturated porous medium with thermal and mass stratification, Int. Commun. Heat Mass Transfer36 (2009), 351356.10.1016/j.icheatmasstransfer.2009.01.003Search in Google Scholar

[8] M.Neagu, Free convective heat and mass transfer induced by a constant heat and mass fluxes vertical wavy wall in a non-Darcy double stratified porous medium, Int. J. Heat Mass Transfer54 (2011), 23102318.10.1016/j.ijheatmasstransfer.2011.02.033Search in Google Scholar

[9] D.Srinivasacharya and Ch.RamReddy, Free convective heat and mass transfer in a doubly stratified non-Darcy micropolar fluid, Korean J. Chem. Eng. 28(9) (2011), 18241832.10.1007/s11814-011-0069-6Search in Google Scholar

[10] A. B.Rosmila, R.Kandasamy and I.Muhaimin, Lie symmetry group transformation for MHD natural convection flow of nanofluid over linearly porous stretching sheet in presence of thermal stratification, Appl. Math. Mech. – English Edition33(5) (2012), 593604.10.1007/s10483-012-1573-9Search in Google Scholar

[11] P. V. S. N.Murthy, D.Srinivasacharya and P. V. S. S. S. R.Krishna, Effect of double stratification on free convection in Darcian porous medium, ASME J. Heat Transfer126 (2004), 297300.10.1115/1.1667525Search in Google Scholar

[12] P. A.Lakshmi Narayana and P. V. S. N.Murthy, Soret and Dufour effects on free convection heat and mass transfer in a doubly stratified Darcy porous medium, J. Porous Media10 (2007), 613623.10.1615/JPorMedia.v10.i6.70Search in Google Scholar

[13] B.Gebhart, Y.Jaluria, R.Mahajan and B.Sammakia, Buoyancy Induced Flows and Transport, USA: Hemisphere, 1988.10.1115/1.3226555Search in Google Scholar

[14] L.Prandtl, Essentials of Fluid Dynamics, Blackie, London, 1952.Search in Google Scholar

[15] Y.Jaluria and K.Himasekhar, Buoyancy induced two dimensional vertical flows in a thermally stratified environment, Comput. Fluids11 (1983), 3949.10.1016/0045-7930(83)90012-9Search in Google Scholar

[16] R. E.Bellman and R. E.Kalaba, Quasilinearization and Nonlinear Boundary-Value Problems, Elsevier, New York, 1965.10.1109/TAC.1965.1098135Search in Google Scholar

[17] L. N.Trefethen, Spectral Methods in MATLAB, USA: SIAM, 2000.10.1137/1.9780898719598Search in Google Scholar

Received: 2014-4-26
Accepted: 2015-4-20
Published Online: 2015-5-12
Published in Print: 2015-6-1

©2015 by De Gruyter

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