Analysis of Entropy Generation and Thermal Stability in a Slab

被引：17

作者：

Aziz, A. ^{[1
]}

Makinde, O. D. ^{[2
]}

机构：

[1] Gonzaga Univ, Sch Engn & Appl Sci, Dept Mech Engn, Spokane, WA 99268 USA

[2] Cape Peninsula Univ Technol, Fac Engn, ZA-7535 Bellville, South Africa

来源：

JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER | 2010年 / 24卷 / 02期

基金：

新加坡国家研究基金会;

关键词：

MINIMIZATION; FLOW;

D O I：

10.2514/1.45723

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This study investigates the inherent irreversibility in a rectangular slab with temperature-dependent internal heating. It is assumed that the slab external surfaces are subjected to asymmetric heat exchange with the surrounding medium. The simplified governing equation for energy balance in Cartesian coordinates is solved analytically and expedites to obtain expressions for the temperature field, thermal stability criterion, volumetric entropy generation number, and irreversibility distribution ratio. Graphical results are presented and discussed quantitatively. It is found that the local and total entropy generation rates in the slab can be minimized for certain combinations of the heat transfer parameters.

引用

页码：438 / 444

页数：7

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