NATURAL-CONVECTION HEAT-TRANSFER FROM AN ISOTHERMAL VERTICAL SURFACE TO A STABLE THERMALLY STRATIFIED FLUID

被引：21

作者：

ANGIRASA, D ^{[1
]}

SRINIVASAN, J ^{[1
]}

机构：

[1] INDIAN INST SCI,DEPT MECH ENGN,BANGALORE 560012,KARNATAKA,INDIA

来源：

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME | 1992年 / 114卷 / 04期

关键词：

D O I：

10.1115/1.2911901

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Natural convection from an isothermal vertical surface to a thermally stratified fluid is studied numerically. A wide range of stratification levels is considered. It is shown that at high levels of ambient thermal stratification, a portion at the top of the plate absorbs heat, while a horizontal plume forms around a location where the plate temperature equals the ambient temperature. The plume is shown to be inherently unsteady, and its transient nature is investigated in detail. The effect of the temperature defect in striating the plume is discussed. Average Nusselt number data are presented for Pr = 6.0 and 0.7.

引用

页码：917 / 923

页数：7