Combined heat and mass transfer on non-Darcy natural convection in a fluid saturated porous medium with thermophoresis

• Autorzy: El-Hakiem M. A. , El-Kabeir S. M. , Rashad A. M.
• Języki publikacji: EN

Abstrakty

EN

The present investigation deals with the combined heat and mass transfer with the effects of thermal dispersion, radiation on non-Darcy natural convection in a fluid saturated porous medium with thermophoresis. The goveming equations, reduced to local similarity boundary layer equations using suitable transformations are obtained. Forchheimer extension is considered in the fIow equations. The coefficient of thermal diffusivity has been assumed to be the sum of molecular diffusivity and the dispersion thermal diffusivity due to mechanical dispersion. Rosseland approximation is used to describe the radiative heat fIux in the energy equation. For the fluids having the Lewis number Le=l.O, 10.0, numerical values of the local Stanton number are presented in a tabular form for different values of the thermophoretic parameter [...], thermal dispersion and thermal radiation for the two cases of Darcy and non-Darcy porous medium. The concentration distributions are show n graphically for various values of the thermophoretic parameter, thermal dispersion and thermal radiation.

Słowa kluczowe

EN

heat and mass transfer; thermophoresis; radiation; thermal dispersion; natural convection

PL

promieniowanie; konwekcja

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2007
• Tom: Vol. 12, no 1
• Strony: 9--18
• Opis fizyczny: Bibliogr. 15 poz., tab., wykr.

Twórcy

autor

El-Hakiem M. A.

autor

El-Kabeir S. M.

autor

Rashad A. M.

• Department of Mathematics, South Valley University Faculty of Science Aswan, EGYPT,

Bibliografia

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