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Constructal entransy dissipation rate minimization for umbrella-shaped assembly of cylindrical fins 被引量:24
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作者 XIAO QingHua CHEN LinGen SUN FengRui 《Science China(Technological Sciences)》 SCIE EI CAS 2011年第1期211-219,共9页
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... 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. 展开更多
关键词 constructal theory FIN entransy dissipation rate intensifying heat transfer generalized thermodynamic optimization
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