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SUITABILITY OF ROSSELAND APPROXIMATION FOR THERMAL RADIATION IN FLOW OVER ROTATING CONE EMBEDDED IN POROUS MEDIUM

卷 11, 册 2, 2020, pp. 103-118
DOI: 10.1615/SpecialTopicsRevPorousMedia.2020028751
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摘要

A study was made of the heat and mass transfer in magnetohydrodynamic Casson fluid flow over a vertical rotating cone embedded in a porous medium containing gyrotactic microorganisms. Linear and nonlinear approaches for the mathematical modelling of thermal radiation were compared. The linear form of thermal radiation gave qualitatively correct but quantitatively inaccurate results for the mass transfer, under various values of the Soret parameter. The magnetic field enhanced the heat and mass transfer rates, whereas the Soret parameter increased the concentration and the Dufour parameter enhanced the velocity and heat transfer rate.

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