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Mixed convection heat and mass transfer in a doubly stratified non-Darcy porous medium

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Języki publikacji
EN
Abstrakty
EN
The mixed convection heat and mass transfer from a vertical surface embedded in a doubly stratified nonDarcy porous medium have been analyzed. The wall temperature and concentration are constant and the medium is linearly stratified with respect to both temperature and concentration. The external flow is assumed to be uniform. A series approximation is made for both temperature and concentration in terms of the stratification parameter and the solution is presented in both the aiding and opposing flow cases. The flow, temperature and concentration fields are effected by complex interactions among the diffusion ratio Le and buoyancy ratio N and stratification ratio Sr in addition to the flow driving mixed convection parameter Ra/Pe The effect of double stratification of the medium on non-dimensional heat and mass transfer coefficients is discussed.
Rocznik
Strony
109--123
Opis fizyczny
Bibliogr. 14 poz., wykr.
Twórcy
autor
Bibliografia
  • Bejan A. (1984): Convection Heat Transfer. - New York: John Wiley and Sons, pp.367-369.
  • Bejan A. and Khair K.R. (1985): Heat and mass transfer by natural convection in a porous medium. - Int J Heat Mass Transfer, vol.28, pp.909-918.
  • Chamkha A.J. and Khaled A.-R.A. (2000): Hydro-magnetic simultaneous heat and mass transfer by mixed convection from a vertical plate embedded in a stratified porous medium with thermal dispersion effects. - Heat and Mass Transfer, vol.36, pp.63-70.
  • Kalpana T. and Singh P. (1992): Natural convection in a thermally stratified fluid saturated porous medium. - Int. J. Eng. Science, vol.30, pp.1003-1007.
  • Lai F.C. (1991): Coupled heat and mass transfer by mixed convection from a vertical plate in a saturated porous medium. - Int Commun. Heat Mass Transfer, vol.18, pp.93-106.
  • Lai F.C. and Kulacki F.A. (1991): Coupled heat and mass transfer by natural convection from vertical surfaces in porous media. - Int J Heat Mass Transfer, vol.34, pp.1189-1194.
  • Lai F.C., Pop I. and Kulacki F.A. (1990): Natural convection from isothermal plates in thermally stratified porous media. - AAIA J. Thermo-physics. Heat Transfer, vol.4, pp.533-535.
  • Murthy P.V.S.N. (2000): Effect of double dispersion on mixed convection heat and mass transfer in non- darcy porous medium. - Trans ASME Journal of Heat Transfer, vol.122, pp.476-484.
  • Murthy P.V.S.N., Srinivasacharya D. and Krishna P.V.S.S.S.R. (2004): Effect of double stratification on free convection in darcian porous medium. - Transactions of ASME, Journal of Heat Transfer, vol.126, pp.297-300.
  • Nakayama A. and Koyama H. (1987): Effect of thermal stratification on free convection with a porous medium. - AAIA J. Thermophys. Heat Transfer, vol.1, pp.282-285.
  • Nield D.A. and Bejan A. (1992): Convection in Porous Media. - New-York: Springer-Verlag.
  • Singh P. and Sharma K. (1990): Integral method for free convection in thermally stratified porous medium. - Acta Mechanica, vol.83, pp.157-163.
  • Takhar H.S. and Pop I.. (1987): Free convection from a vertical flat plate to a thermally stratified Darcian fluid. - Mechanics Research Communications, vol.14, pp.81-86.
  • Vafai K. and Tien C.L. (1981): Boundary and inertia effects on flow and heat transfer in porous media. - Int J Heat Mass Transf., vol.24, pp.195-203.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPZ2-0028-0009
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