Influence of Soret and Dufour effects on entropy generation in transient double diffusive convection

被引：3
|
作者：
Hidouri, N. [1 ]
Ben Brahim, A. [1 ]
机构：
[1] Gabes Univ, Chem & Proc Engn Dept, Engineers Natl Sch, Gabes 6029, Tunisia
来源：
INTERNATIONAL JOURNAL OF EXERGY | 2010年 / 7卷 / 04期
关键词：
double diffusive convection; entropy generation; numerical methods; Soret effect; Dufour effect; COOPERATING THERMOSOLUTAL CONVECTION; CONSTANT HEAT-FLUX; NATURAL-CONVECTION; HORIZONTAL TEMPERATURE; MASS-TRANSFER; POROUS-MEDIA; COEFFICIENT; GRADIENTS; FLOWS; ENCLOSURES;
D O I：
10.1504/IJEX.2010.033414
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The influence of Soret and Dufour effects on entropy generation in transient double diffusive convection of a binary gas mixture for the special case of opposing buoyancy forces with equal intensity is numerically studied. It is an interesting case since it corresponds to minimum entropy generation. For moderate thermal Grashof number (Gr(T) = 10(4)), Soret and Dufour parameters induce a slight increase of entropy generation, for relatively higher thermal Grashof number (Gr(T) = 5 x 10(4)), oscillatory behaviour of entropy generation is obtained. Contributions of Soret and Dufour effects on entropy generation, on heat and mass transfer are discussed.
引用
收藏
页码：454 / 481
页数：28
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