Influence of variable permeability on combined convection along a non-isothermal wedge in a saturated porous medium

• Autorzy: Ibrahim F. S. , Hassanien I. A.
• Języki publikacji: EN

Abstrakty

EN

Mixed convection along a vertical non-isothermal wedge embedded in a fluid - saturated porous media incorporating the variation of permeability and thermal conductivity is studied. The surface temperature is assumed to vary as a power of the axial coordinate measured from the leading edge of the plate. A nonsimilar mixed convection parameter 'ksi' and a pseudo-similarity variable 'eta' are introduced to cast the governing boundary layer equations into a system of dimensionless equations which are solved numerically using finite difference method. The entire mixed convection regime is covered by the single nonsimilarity parameter 'ksi'=[1+(Rax/Pex)1/2]-1 from pure forced convection ('ksi'=1) to pure free convection ('ksi'=0). The problem is solved using nonsimilarity solution for the case of variable wall temperature. Velocity and temperature profiles as well as the local Nusselt number are presented. The wedge angle geometry parameter ranged from 0 to 1.

Słowa kluczowe

EN

mixed convection; porous media; heat transfer; nonsimilar solution

PL

materiałoznawstwo

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: Applied Mechanics and Engineering
• Rocznik: 1999
• Tom: Vol. 4, no 4
• Strony: 699--714
• Opis fizyczny: Bibliogr. 19 poz., tab., wykr.

Twórcy

autor

Ibrahim F. S.

autor

Hassanien I. A.

• Department of Mathematics, Faculty of Science, Assiut University, Assiut, EGYPT