高机动雷达液冷系统的散热能力仿真研究  

Numerical research on heat performance of a liquid cooling system for high mobility radar

作　　者：夏善涛 左堃罡 赵文 Xia Shantao;Zuo Kungang;Zhao Wen(Shanghai Aerospace Electronic Technology Institute,Shanghai 201109,China)

机构地区：[1]上海航天电子技术研究所,上海201109

出　　处：《低温与超导》2024年第11期75-82,共8页Cryogenics and Superconductivity

基　　金：国家重点研发计划(2016YFC0800402)资助。

摘　　要：本文针对雷达液冷系统进行设计及仿真研究,对影响系统工作的因素展开分析,建立了散热器计算模型、液冷系统分析模型及三维数值模拟模型,分析了雷达液冷系统中影响散热能力的关键系统参数。在对本系统散热器进行研究时发现空气流量不仅影响风阻,且会导致冷却液流阻及散热效率随空气流量非线性增长并在3.05 m^(3)/s时出现临界值,冷却液流量增长会导致风阻及散热效率非线性变化,且在65 L/min时出现临界值;在对本系统建立分析模型中发现,旁通管路开度的增加不仅影响雷达流量,还会导致供液温度上升,故开度应小于13%;在三维数值模拟中发现,外界风场会影响风机实际工作点进而对散热能力产生不利影响。In this paper, the liquid cooling system for the radar was designed and simulated, and the key factors affecting the system were analyzed. The heat exchanger calculation model, the liquid cooling system analysis model and numerical simulation model were developed to estimate the extent degree of system heat dissipation ability by those factors. In calculation of heat exchanger, it is found that air flow rate not only increase aerodynamic drag but also lead to coolant flow resistance and efficiency nonlinearly increase, critical value appears at 3.05 m^(3)/s, same trend appear in the change of coolant rate and critical value appears at 65 L/min. In liquid cooling system analysis, it is found that the open ratio of by-pass valve will influence the flow rate of radar and further increase the feed liquid temperature, the open ratio should below 13%. In transient analysis, It is found out that the heat dissipation ability will change in starting process. By analyzing the result of numerical simulation, the external wind will change the working point of the fan and cause overall performance loss.

关 键 词：液冷系统 雷达 散热器 分析模型 数值模拟 

分 类 号：TN957.84[电子电信—信号与信息处理] TB657.5[电子电信—信息与通信工程]