NATURAL CONVECTION IN A VERTICAL POROUS ANNULUS FROM TWO THERMAL SOURCES

摘要：

The effects of discrete heating on natural convection heat transfer in a vertical porous annulus are investigated numerically. The inner wall of the annulus has two discrete flush-mounted heat sources, the outer wall is isothermally cooled at a lower temperature, and the top and bottom walls are thermally insulated. The governing equations are solved using an implicit finite difference technique. The influence of discrete heating on the flow and heat transfer in the porous annulus are investigated for a wide range of parameters. We found that the heat transfer rate is always higher at the bottom heater. Further, the rate of heat transfer increases with radius ratio (curvature) but decreases with Darcy number.

作者: Younghae Do M.Sankar Juan M.Lopez

作者单位: Department of Mathematics, Kyungpook National University,1370 Sangyeok-Dong, Buk-Gu, Daegu 702-701, School of Mathematical and Statistical Sciences, Arizona State University,Tempe,AZ 85287, USA

会议类型: 国际会议

会议名称: 2nd International Conference on Computational Methods for Thermal Problems(第二届热问题计算方法国际会议)

会议地点: 大连

会议语种:英文

页码: 209-212

在线出版日期: 2011-09-05（万方平台首次上网日期，不代表论文的发表时间）