Numerical study of coupled double-diffusive natural convection and radiation in a square cavity filled with A N2-CO2 mixture

被引：44

作者：

Ibrahim, A. ^{[1
]}

Lemonnier, D. ^{[1
]}

机构：

[1] Univ Poitiers, CNRS, UMR 6608, ENSMA,Lab Etud Therm, F-86961 Futuroscope, France

来源：

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 2009年 / 36卷 / 03期

关键词：

Double-diffusive convection; Coupled radiation convection; Discrete ordinate method; Transient regime; Aiding opposing configurations; Numerical solution; SIDE-HEATED CAVITY; GRAY-GASES MODEL; HORIZONTAL TEMPERATURE; GRADIENTS; FLOW;

D O I：

10.1016/j.icheatmasstransfer.2008.10.019

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The coupling of transient double diffusive convection with radiation is investigated numerically in a square cavity filled with a mixture of N-2 and CO2. Horizontal temperature and concentration gradients are prescribed and the temporal evolution of the flow has been computed in both aiding and opposing situations. The numerical results show that gas radiation modifies the structure of the velocity and thermal fields and accelerates the convergence to steady state in aiding case, while it favours the generation of instabilities and delays the arrival to a stable solution in opposing one. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：197 / 202

页数：6

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