NATURAL-CONVECTION FROM POINT-SOURCE EMBEDDED IN DARCIAN POROUS-MEDIUM

被引：10

作者：

AFZAL, N

SALAM, MY

机构：

[1] Department of Mechanical Engineering, Aligarh Muslim University, Aligarh

[2] Department of Mechanical Engineering, Kuwait University, Kuwait

来源：

FLUID DYNAMICS RESEARCH | 1990年 / 6卷 / 3-4期

关键词：

D O I：

10.1016/0169-5983(90)90060-C

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The buoyancy induced convection arising from a point heat source in a fluid saturated Darcy porous medium bounded by an adiabatic conical surface, of apex angle 2θω, has been studied. The point heat source is located at the apex and the axis of the conical surface coincides with the direction of bouyant force vector. The self-similar equations are obtained for 0 < θω < π and Rayleigh number Ra from zero to infinity. The numerical solutions of self-similar equations have been obtained for θω (free plume), 3π,/4, π/2 (plume bounded by horizontal surface), and π/4. It is shown that for a given Ra, the centre line velocity and temperature increases as πω (the bounding space) decreases. A perturbation solution for Ra → 0 also been studied to present closed form solution. © 1990.

引用

页码：175 / 184

页数：10

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