基于电磁-流场耦合的轨道冷却仿真分析  

Simulation and Analysis of Rail Cooling Based on Electromagnetic and Fluid Field Coupling

作　　者：古刚 吴立周[2] 耿昊 赵玺[2] Gu Gang;Wu Lizhou;Geng Hao;Zhao Xi(College of Electrical Engineering Naval University of Engineering,Wuhan,430033,China;713 Research Institute of China Shipbuilding Industry Corporation,Zhengzhou,450015,China)

机构地区：[1]海军工程大学电气工程学院,武汉430033 [2]中国船舶重工集团公司第七一三研究所,郑州450015

出　　处：《电工技术学报》2020年第17期3601-3608,共8页Transactions of China Electrotechnical Society

摘　　要：轨道加速器连续工作时,轨道局部温升过高会严重影响其结构强度,有必要对其温升和冷却效果进行仿真分析。该文从分析轨道加速器的动态特性出发,给出电枢运动状态下轨道热源加载、多次加速的时间步长差异等关键问题的解决方法。基于Ansys-APDL语言,编程实现了轨道冷却的电磁-流场耦合仿真分析。无水冷工况下,在连续5次加速后轨道最高温度已超过铜材软化温度400℃。通过分析冷却水参数对轨道冷却效果的敏感度,最终选取体积浓度为50%的乙二醇水溶液作为冷却液。在连续7次加速后,冷却液与轨道最高温度基本不再上升,且轨道最高温度为308.7℃,未超过铜材料的软化温度。该仿真方法和结果对轨道加速器的热管理具有一定的指导意义。In the successive progress of the rail accelerator,too high local temperature rise in the rails will seriously affect its structural strength,it is necessary to analyze it’s temperature and cooling.Begin with the analysis of the dynamic characteristics of the rail accelerator,the key problems such as the heat source loading of the rails and the time step difference of multiple accelerations were solved.Based on programming of ANSYS-APDL,the electromagnetic-fluid coupling simulation analysis of rails’cooling was realized.Without Water Cooling,after 5 successive accelerations the maximum temperature of the rails has exceeded the copper softening temperature by 400℃.By analyzing the sensitivity of the cooling water parameters to the cooling effect,the 50%volume concentration of ethylene glycol water solution was selected as the cooling solution.After 7 consecutive accelerations,the maximum temperature of the cooling solution and the rails do not increase,and the highest temperature of the rails is 308.7℃,which do not exceed the softening temperature of the copper material.The simulation method and results can be used to guide the thermal management of the rail accelerator.

关 键 词：轨道加速器 冷却 耦合场 有限元 

分 类 号：TM15[电气工程—电工理论与新技术] TJ012.1[兵器科学与技术—兵器发射理论与技术]