NUMERICAL STUDY OF DOUBLE-DIFFUSIVE NATURAL-CONVECTION IN A SQUARE CAVITY

被引：241

作者：

BEGHEIN, C ^{[1
]}

HAGHIGHAT, F ^{[1
]}

ALLARD, F ^{[1
]}

机构：

[1] CONCORDIA UNIV,CTR BLDG STUDIES,MONTREAL H3G 1M8,QUEBEC,CANADA

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 1992年 / 35卷 / 04期

关键词：

D O I：

10.1016/0017-9310(92)90251-M

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Steady-state thermosolutal convection in a square cavity filled with air, submitted to horizontal temperature and concentration gradients, is studied numerically. In the first series of numerical simulations, the influence of solutal buoyancy force on heat or mass transfer rate is investigated: Lewis and thermal Rayleigh numbers are kept constant (Le = 1, Ra(T) = 10(7)), solutal Rayleigh number is varied (Ra(S) = 10(5)-5 x 10(7)). The second series deals with the influence of Lewis number on fluid motion for heat transfer driven flow (Ra(T) = 10(7), Ra(S) = 0) and mass transfer driven flow (Ra(T) = 0, Ra(S) = 10(7)) configurations. Lewis number is varied from 0.3 to 5. Correlations are obtained between heat and mass transfer rates and the non-dimensional numbers characterizing both phenomena.

引用

页码：833 / 846

页数：14

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