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Free Convective Boundary Layer Flow from a Heated Surface in a Layered Porous Medium

Volume 2, Issue 1, 1999, pp. 39-58
DOI: 10.1615/JPorMedia.v2.i1.30
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ABSTRACT

We examine theoretically the steady free convective flow from an isothermal vertical flat plate embedded in a saturated porous medium. We consider in detail the effect of parallel layering on the flow and rate of heat transfer. The layering arises from discrete changes in either the permeability or the diffusivity of the porous medium. Mathematically, the presence of layering causes the boundary layer equations to be non-similar, and these equations are solved numerically using the Keller-box method. The numerical work is supplemented by an asymptotic analysis of the flow in the far-downstream limit. Where there is a finite number of sublayers sandwiched between the heated surface and the remaining isotropic medium, detailed results are limited by the appearance of eigensolutions in the asymptotic expansion. When the medium is composed of alternating sublayers an asymptotic analysis yields an equivalent homogeneous medium.

CITED BY
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  2. Rees D.Andrew S., Bassom Andrew P., Pop Ioan, Forced convection past a heated cylinder in a porous medium using a thermal nonequilibrium model: boundary layer analysis, European Journal of Mechanics - B/Fluids, 22, 5, 2003. Crossref

  3. Bibliography, in Convective Heat Transfer, 2001. Crossref

  4. Leong J. C., Lai F. C., Natural Convection in Rectangular Layered Porous Cavities, Journal of Thermophysics and Heat Transfer, 18, 4, 2004. Crossref

  5. Goldstein R.J., Eckert E.R.G., Ibele W.E., Patankar S.V., Simon T.W., Kuehn T.H., Strykowski P.J., Tamma K.K., Bar-Cohen A., Heberlein J.V.R., Davidson J.H., Bischof J., Kulacki F.A., Kortshagen U., Garrick S., Heat transfer – a review of 1999 literature, International Journal of Heat and Mass Transfer, 44, 19, 2001. Crossref

  6. Leong Jik-Chang, Lai Feng, Natural Convection in Rectangular Layered Porous Cavities, 42nd AIAA Aerospace Sciences Meeting and Exhibit, 2004. Crossref

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