A multi-objective study on the constructal design of non-uniform heat generating disc cooled by radial-and dendritic-pattern cooling channels

作     者：CHEN Chen YOU Jiang FENG HuiJun CHEN LinGen CHEN Chen;YOU Jiang;FENG HuiJun;CHEN LinGen

作者机构：Institute of Thermal Science and Power EngineeringWuhan Institute of TechnologyWuhan 430205China School of Mechanical&Electrical EngineeringWuhan Institute of TechnologyWuhan 430205China §School of Optical Information and Energy EngineeringWuhan Institute of TechnologyWuhan 430205China College of Power EngineeringNaval University of EngineeringWuhan 430033China 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.51779262 and 51579244) the Independent Project of Naval University of Engineering(Grant No.425317Q017) 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2021年第64卷第4期

页      码：729-744页

摘      要：A three-dimensional disc model with non-uniform heat generating is built.A series of cooling channels are inserted to cool this disc which is strewn in a hierarchical *** reveal thermal and flow characteristics,a composite objective function comprised of the maximum temperature difference(MTD)and pumping power is *** deployment pattern of cooling channels contains two cases,i.e.,the radial-pattern and *** capitalizing on constructal design method together with finite element method,the diameter of radial-pattern cooling channels is optimized in the first ***,the diameter,angle coefficient and length coefficient of dendritic-pattern cooling channels are three degrees-of-freedom to be stepwise optimized at different heat generating ***,NSGA-II algorithm is introduced into the multiobjective *** obtaining its Pareto optimal solution set,Topsis method is invoked to yield the optimal solutions under given weighted *** heat generation over the entire body and the volume ratio of cooling channels operate as the primary *** on these premises,constructal design will be stepwise performed by varying three *** obtained results state that more heating components or devices should be installed as close to the cooling water inlet as *** can further reduce MTD at the same cost of pumping power,thereby improve thermal and flow performance and prolong the lifespan of *** optimized with two degrees-of-freedom,the MTD is reduced by 18.6%compared with the counterpart obtained from single degree-of-freedom optimization,while the pumping power is increased by 59.8%.As optimized with three degrees-of-freedom,the MTD is decreased by 6.2%compared with the counterpart from two degrees-of-freedom optimization,while the pumping power is increased by 3.0%.It is manifest that when two sub-objectives form a composite objective,the performance improvement of one sub-

主 题 词：constructal law non-uniform heat generating disc heat convection cooling channels multi-objective optimization generalized thermodynamic optimization 

学科分类：080701[080701] 08[工学] 0807[工学-电子信息类] 

核心收录：

D　O　I：10.1007/s11431-020-1697-7

馆 藏 号：203102132...