Publication de 12 numéros par an
ISSN Imprimer: 1091-028X
ISSN En ligne: 1934-0508
Indexed in
Aiding and Opposing Mixed Convection from a Cylinder in a Saturated Porous Medium
RÉSUMÉ
Numerical solutions are presented for mixed convection from a cylinder embedded in a saturated porous medium. Both aiding and opposing flow conditions are considered. Numerical calculations using the finite difference method with body-fitted coordinates have covered a wide range of governing parameters (i.e., 10 Ј Re Ј 100, 0 Ј Gr Ј 400 and Pr = 0.7). The present results agree well with the previous study by Badr and Pop (1988) for flows at a small Reynolds number and a small mixed convection parameter Gr/Re. However, significant discrepancies have been found between the two studies for flows at a high Reynolds number and a high mixed convection parameter Gr/Re. In addition, oscillatory flows are observed for opposing flows at high Gr/Re, which were not revealed in the previous study (Badr and Pop, 1988). Several reasons are offered to explain the discrepancies found.
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Salman Ahmed N.J., Badruddin Irfan Anjum, Kanesan Jeevan, Zainal Z.A., Nazim Ahamed K.S., Study of mixed convection in an annular vertical cylinder filled with saturated porous medium, using thermal non-equilibrium model, International Journal of Heat and Mass Transfer, 54, 17-18, 2011. Crossref
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Cánovas M., Alhama I., Trigueros E., Alhama F., A review of classical dimensionless numbers for the Yusa problem based on discriminated non-dimensionalization of the governing equations, Hydrological Processes, 30, 22, 2016. Crossref