Soret and Dufour effects on mixed convection from a vertical plate in power-law fluid saturated porous medium

Abstract

Mixed convection heat and mass transfer along a vertical plate embedded in a power-law fluid saturated Darcy porous medium with Soret and Dufour effects is studied. The governing partial differential equations are transformed into ordinary differential equations using similarity transformations and then solved numerically using shooting method. The effect of Soret and Dufour parameters, power law index and mixed convection parameter on non-dimensional velocity, temperature and concentration fields are discussed. The variation of different parameters on heat and mass transfer rates is presented in tabular form.Proucena je mesovita konvekcija toplote i mase duz vertikalne Darsijeve porozne ploce potopljene i zasicene sa tecnoscu (stepenog reda) sa prisutnim Soret-ovim i Dufour-ovim efektom. Vladajuce parcijalne diferencijalne jednacine su preobrazene u obicne diferencijalne jednacine pomocu transformacije slicnosti i onda resene numerickim metodom gadjanja. Uticaj parametara Soret-a i Dufour-a, indeksa stepenog reda i parametra mesovite konvekcije na bezdimenzionalnu brzinu, temperaturu i koncentraciju polja se razmatra. Varijacija razlicitih parametara na toplotne i masene brzine prenosa je predstavljena u obliku tabele.