OPTIMUM DESIGN OF A RECTANGULAR FIN WITH A STEP CHANGE IN CROSS-SECTIONAL AREA

被引：17

作者：

AZIZ, A

机构：

[1] Department of Mechanical Engineering Gonzaga University, Spokane

来源：

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 1994年 / 21卷 / 03期

关键词：

616 Heat Exchangers - 641 Heat and Mass Transfer; Thermodynamics; -; 921; Mathematics;

D O I：

10.1016/0735-1933(94)90007-8

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The paper considers the optimum design (maximum heat dissipation for a fixed profile area) of a convecting, rectangular fin with a step change in cross-sectional area. The optimization problem is solved using the method of Lagrange multipliers. For the profile parameter A(p)(2h/K)1/2 ranging from 10(-4) to 1, the maximum enhancement in heat dissipation is about 9% compared with the uniformly thick fin. When the heat dissipation is specified, the saving in material with a step design can be as much as 23% compared with the uniform thickness design. The design procedure is illustrated with two examples.

引用

页码：389 / 401

页数：13