摘要
基于热力学理论并运用Hyper Works分别对矩形翅片散热器和环形翅片散热器进行稳态热仿真分析,优选出散热性能较好的翅片散热器。为了改善空调散热器的散热性能,本文对优选的翅片散热器进行基于形状优化的稳态热传导和固有频率分析。采用Hyper Morph对优选的翅片散热器进行预变形定义并作为形状优化的设计变量,通过Opti Struct求解器计算出使散热性能最优的翅片散热器结构形状和固有频率。该方法有效地降低空调散热器最高温度并改善了它的散热性能,还大大地提升了空调散热器的抑制振动能力。
The heat radiation and natural frequency of rectangular and annular ribbed radiators of airconditioners were mathematically modeled,theoretically analyzed in thermodynamics/mechanical dynamics and numerically simulated in finite element method with software Hyper Works,Hyper Morph and Opti Struct for design optimization.The impact of the rib-type on the heat radiation and vibration resistance of the radiator was investigated. The simulated results show that when it comes to steady heat radiation and mechanical stability,the annular ribbed radiator outperforms the rectangular one,and that structure optimization significantly improves the heat radiation and vibration resistance. For example,structure optimization of annular ribbed radiator significantly decreases the highest temperature from 225. 4 to 162. 8℃ and considerably increases the 1st-order natural frequency from 689. 9976 to1002. 681 Hz. We suggest that the simulated results be of some technological interest in design optimization of airconditioners＇ radiator.
作者
李晓敏
Li Xiaomin(Shanxi Datoag University , Datong 037003 , Chin)
出处
《真空科学与技术学报》
CSCD
北大核心
2017年第9期845-850,共6页
Chinese Journal of Vacuum Science and Technology
基金
山西省软科学研究计划项目(2014041068-4)
关键词
热稳态分析
形状优化
固有频率分析
散热性能
Thermal stable heat analysis, Model analysis, Shape optimization, Heat dispersion
