基于耗散理论的电子模块管内传热数值研究  

Numerical Study on Heat Transfer in Liquid Cooling Tube of Electronic Modules Based on Entransy Dissipation

作　　者：翁夏[1,2] WENG Xia(Southwest Institute of Electronic Technology,Chengdu 610036;Sichuan Provincial EngineeringLaboratory of Environmental Adaptability Technology for Aerospace Electronic Equipment,Chengdu 610036)

机构地区：[1]西南电子技术研究所,成都610036 [2]四川省空天电子装备环境适应性技术工程实验室,成都610036

出　　处：《环境技术》2023年第2期88-93,共6页Environmental Technology

摘　　要：基于耗散理论,研究分析了在新型强化传热结构下管内传热的特性。以流动传热过程中的温度、压力和对流换热系数的为分析对象,使用数值计算的方法,对光管和内插螺旋片两种管道结构下的传热系统进行了研究。通过对网格独立解的研究,得到了适合于本文案例的分析参数,保证了数值计算结果的一致性。研究结果表明,内插螺旋片液冷管结构下的热源温度明显低于光管结构下的热源温度,具有显著的强化传热效果;且其强化效果随着流量增加而逐渐减弱,其驱动代价随着流量增加而显著提高,更加适合于应用在中小流量区域。Based on the theory of entransy dissipation, heat transfer characteristics in tubes with enhanced heat transfer structure are investigated. Taking the temperature, pressure and heat transfer coefficient as the analysis object, and using the method of numerical calculation, the heat transfer systems with smooth tubes and tubes fitted with helical screw-tape inserts are discussed. Through a study on the grid independent solution, the suitable analytical parameters are obtained, and the consistent of the calculated results is ensured. The results show that the heat sources temperature of tubes fitted with helical screw-tape are lower than the temperature of smooth tubes, and show obvious heat transfer enhancement effect. Furthermore, the heat transfer enhancement becomes less efficient along with the increasement of flow rate, and the cost increases along with the increasement of flow rate. The enhanced heat transfer structure is more suitable in the range of low and medium flow rate.

关 键 词：模态试验 振型斜率 速率陀螺 加速度计 

分 类 号：TK121[动力工程及工程热物理—工程热物理]