基于CFD/MOGA优化的低温试验制冷喷管优化研究  

Optimization Research on Cooling Nozzle Flow Temperature Test Based on CFD/MOGA

作　　者：崔英伟[1,2] 闫旭东 路梓照 CUI Ying-wei;YAN Xu-dong;LU Zi-zhao(Beijing Institute of Structure and Environment Engineering,Beijing 100076,China;Tianjin Aerospace Reliability Technology Co.Ltd,Tianjin 300462,China)

机构地区：[1]北京强度环境研究所,北京100076 [2]天津航天瑞莱科技有限公司,天津300462

出　　处：《强度与环境》2020年第5期55-59,共5页Structure & Environment Engineering

摘　　要：本文叙述了针对液氮制冷系统中制冷喷管的尺寸优化研究。为优化制冷空间壁面温度均匀性问题,将制冷喷管以及制冷空间简化为二维模型,应用Fluent软件进行CFD仿真,以壁面最高温度和温度最大波动值作为优化目标采用MOGA优化方法对氮气喷管进行尺寸优化设计,优化后的CFD仿真结果表明壁面温度最大波动值小于1.7℃。对优化后的制冷喷管进行测试,测试表明CFD仿真结果与实测结果存在一定偏差,但是制冷空间整体温度均匀度得到了较好的改善,壁面温度均匀度满足±3℃的工程需求。This paper describes the research on the size optimization of the nozzle in liquid nitrogen refrigeration system.In order to optimize the temperature uniformity of the cooling space,the cooling nozzle and the cooling space were simplified into a two-dimensional model.The software Fluent was used for CFD simulation.The maximum wall temperature and the maximum temperature fluctuation were taken as the optimization objectives.The size optimization design of the nitrogen nozzle was carried out with the MOGA optimization method.The CFD simulation results show that the maximum wall temperature fluctuation value is less than 1.7℃.The optimized cooling nozzle was tested,and the experiment showed that there was a deviation between the CFD simulation results and the measured results,but the overall temperature uniformity of the cooling space was improved,and the wall surface temperature uniformity met the engineering requirements of±3℃.

关 键 词：CFD MOGA FLUENT 尺寸优化 

分 类 号：V216.5[航空宇航科学与技术—航空宇航推进理论与工程]