斜置斜切双喷管发动机后封头结构瞬态传热仿真与试验研究  

Transient Heat Transfer Simulation and Experimental Investigation of the Aft Dome with Two Inclined and Scarfed Nozzles in SRM

作　　者：吴素丽 田小涛 樊建龙 汤祥 陈敏芳 WU Suli;TIAN Xiaotao;FAN Jianlong;TANG Xiang;CHEN Minfang(Xi’an Modern Control Technology Research Institute,Xi’an 710065,China)

机构地区：[1]西安现代控制技术研究所,西安710065

出　　处：《弹箭与制导学报》2020年第3期108-112,共5页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：斜置斜切双喷管发动机后封头内流动与传热复杂,其热防护效果直接关系发动机能否长时间正常工作,文中采用数值模拟方法对斜切双喷管发动机后封头进行三维流场与传热仿真,并开展了试验研究。结果表明,三维非稳态流固耦合传热仿真模型能模拟出斜切双喷管后封头结构的传热过程,误差在4%以内;在绝热结构配合面设计迂回型沟槽有效,能够实现发动机长时间正常工作,但需严格控制各组件间的配合间隙。The flow and heat transfer in the aft dome with two inclined and scarfed nozzles are complex,the heat insulation effect is directly related to normal operation of the engine.Here,three-dimensional flow field and heat transfer simulation of the aft dome with two inclined and scarfed nozzles is carried out by numerical simulation,and experimental research is carried out.The results show that three-dimensional unsteady flow flield model can simulate the heat tranfer process of the aft dome with an error of less than 4%.The design of circuitous grooves at the mating surface of the adiabatic structure is effective,but the mating gap between the components should be strictly controlled.

关 键 词：斜切双喷管 后封头结构 流固耦合传热 试验研究 

分 类 号：TJ760.33[兵器科学与技术—武器系统与运用工程] V435[航空宇航科学与技术—航空宇航推进理论与工程]