Constructal entransy dissipation rate minimization for umbrella-shaped assembly of cylindrical fins

被引：35
作者：
Xiao QingHua [1 ]
Chen LinGen [1 ]
Sun FengRui [1 ]
机构：
[1] Naval Univ Engn, Postgrad Sch, Wuhan 430033, Peoples R China
来源：
SCIENCE CHINA-TECHNOLOGICAL SCIENCES | 2011年 / 54卷 / 01期
基金：
中国国家自然科学基金;
关键词：
constructal theory; fin; entransy dissipation rate; intensifying heat transfer; generalized thermodynamic optimization; CONVECTIVE HEAT-TRANSFER; PHYSICAL QUANTITY SYNERGY; LAMINAR-FLOW FIELD; THERMAL-RESISTANCE; EXTREMUM PRINCIPLE; NUMERICAL-ANALYSIS; OPTIMIZATION; EXCHANGER; CONDUCTION; COORDINATION;
D O I：
10.1007/s11431-010-4152-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Umbrella-shaped assembly of cylindrical fins is optimized by adopting analytical method and taking dimensionless mean thermal resistance (MTR) as performance index. The optimal construct of umbrella-shaped assembly is obtained. The results show that the heat conductance performance of the assembly becomes ever worse with ever greater number of elemental cylindrical fins, the umbrella-shaped assembly reduces to cylindrical fin in some values of design parameters, and the diameters' dependence on design parameters is weak for the optimized assembly. An equivalent thermal resistance defined based on entransy dissipation rate (EDR) reflects an average heat transfer effect of the assembly. The constructal design corresponding to the minimum EDR (or MTR) should be adopted for designing an assembly of fins in engineering at the limit safe condition.
引用
收藏
页码：211 / 219
页数：9
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