Title: Influence of Dufour effect on entropy generation in double diffusive convection

Authors: M. Magherbi, N. Hidouri, H. Abbassi, A. Ben Brahim

Addresses: Civil Engineering Department, High Institute of Applied Sciences and Technology, Avenue of Omar Ibn El Khattab, Gabes 6029, Tunisia. ' Chemical and Process Engineering Department, Engineers National School of Gabes, Avenue of Omar Ibn El Khattab, Gabes 6029, Tunisia. ' Sciences Faculty of Sfax, Department of Physics, P.B. 802, Sfax 3018, Tunisia. ' Chemical and Process Engineering Department, Engineers National School of Gabes, Avenue of Omar Ibn El Khattab, Gabes 6029, Tunisia

Abstract: The influence of Dufour effect on entropy generation in double diffusive convection is numerically investigated in this paper. The dimensionless total entropy generation is evaluated as a function of: the buoyancy ratio N, a parameter characterising the solutal buoyancy forces by report to the thermal ones; the Dufour parameter K_F, a parameter characterising the influence of the diffusion-thermo effect; the thermal Grashof number. More details of the investigation is focused for the special case when N = −1.

Keywords: heat transfer; mass transfer; entropy generation; thermodynamics; irreversible processes; cavity; numerical methods; Dufour effect; double diffusive convection; exergy.

DOI: 10.1504/IJEX.2007.013392

International Journal of Exergy, 2007 Vol.4 No.3, pp.227 - 252

Published online: 25 Apr 2007 *

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