NDLI: Soret and Dufour Effects on Double-Diffusive Free Convection Over a Vertical Truncated Cone in Porous Media with Variable Wall Heat and Mass Fluxes

Content Provider	Springer Nature Link
Author	Cheng, Ching Yang
Copyright Year	2011
Abstract	This work studies the Soret and Dufour effects on the double-diffusive free convection over a downward-pointing vertical truncated cone with variable wall heat and mass fluxes in fluid-saturated porous media. A coordinate transformation is used to derive the nondimensional boundary-layer governing equations, and the obtained nonsimilar equations are then solved by the cubic spline collocation method. Results for local surface temperature and the local surface concentration are presented as functions of Soret parameters, Dufour parameters, power-law exponents, buoyancy ratios, and Lewis numbers. Results show that increasing the Dufour parameter tends to increase the local surface temperature, while it tends to decrease the local surface concentration. An increase in the Soret number leads to a decrease in the local surface temperature for buoyancy assisting flows, while it leads to an increase in the local surface temperature for buoyancy opposing flows. Increasing the Soret number tends to increase the local surface concentration. Moreover, the local surface temperature and the local surface concentration of the truncated cones with higher power-law exponents are lower than those with lower exponents.
Starting Page	877
Ending Page	888
Page Count	12
File Format	PDF
ISSN	01693913
Journal	Transport in Porous Media
Volume Number	91
Issue Number	3
e-ISSN	15731634
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-09-22
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Porous medium Free convection Truncated cone Soret effect Dufour effect Hydrogeology Industrial Chemistry/Chemical Engineering Classical Continuum Physics Civil Engineering Geotechnical Engineering & Applied Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Catalysis

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