航空发动机附件综合热管理性能分析  

Analysis of integrated thermal management performance of aero-engine accessories

作　　者：苏存要 连文磊[1] 郝鑫 任雪萍 SU Cunyao;LIAN Wenlei;HAO Xin;REN Xueping(College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Research and Development Institute,China First Automobile Company Limited,Changchun 130011,China)

机构地区：[1]南京航空航天大学能源与动力学院,南京210016 [2]中国第一汽车股份有限公司研发总院,长春130011

出　　处：《航空动力学报》2022年第9期1896-1904,共9页Journal of Aerospace Power

摘　　要：针对航空发动机舱内附件面临的热问题,提出了以隔热、通油冷却、通风冷却等为热防护措施的综合热管理方案,通过实验研究了隔热、通油冷却、通风冷却对附件温度的影响,获得了机匣温度、初始燃油温度及燃油流量等对附件表面温度及进出口燃油温升的影响规律。结果表明:隔热能够显著降低附件表面温度增长速率,在100 min工作时间内能够有效控制附件表面温度保持在200℃以下;附件表面温度的主要影响因素为初始燃油温度、加热功率、燃油流量,其中初始燃油温度决定附件进口温度,加热功率、燃油流量决定附件进出口温差,三者共同决定附件表面温度;通风冷却对未采取通油冷却的附件有一定的冷却效果,对采取通油冷却的附件没有明显的冷却效果。In view of the thermal problems faced by the accessories in the aircraft engine cabin,a comprehensive thermal management scheme with heat insulation,oil cooling and ventilation cooling as thermal protection measures was put forward.Through tests,the effects of heat insulation,oil ventilation cooling and ventilation cooling on the temperature of the accessories were studied.The effects of casing temperature,initial fuel temperature and fuel flow rate on the surface temperature of the accessories and the temperature rise of inlet and outlet fuel were obtained.The results showed that the heat insulation can significantly reduce the growth rate of the surface temperature of the accessories,and the surface temperature of the accessories can be effectively controlled to keep below 200℃within the working time of 100 min.The main factors affecting the surface temperature of the accessories consisted of initial fuel temperature,heating power and fuel flow.The initial fuel temperature determined the inlet temperature of the accessories,while the heating power and fuel flow determined the temperature difference between the inlet and outlet of the accessories.The three factors together determined the surface temperature of the accessories.Ventilation cooling had a certain cooling effect on the accessories not participating in oil cooling,but no obvious cooling effect on the accessories participating in oil cooling.

关 键 词：附件 综合热管理 隔热 通油冷却 通风冷却 

分 类 号：V236[航空宇航科学与技术—航空宇航推进理论与工程]