空间发动机推力室气相流动分布无量纲表达方法  

Dimensionless Expression of Gas Flow in the Thrust Chamber of Space Rocket Engine

作　　者：孙恒超[1] 刘敏[1] 吕红剑[1] 王莉娜 SUN Hengchao 1,LIU Min 1,LV Hongjian 1,WANG Lina 2(1. Institute of Telecommunication Satellite, China Academy of Space Technology, Beijing 100094, China ; 2. Beijing Institute of Spacecraft Environment Engineering, Beijing 100094, China)

机构地区：[1]中国空间技术研究院通信卫星事业部,北京100094 [2]北京卫星环境工程研究所,北京100094

出　　处：《空间控制技术与应用》2017年第6期72-78,共7页Aerospace Control and Application

摘　　要：为探究空间发动机推力室气相流动分布简便表达机制,开展推力室气相介质流动相似性分析.构建空间发动机推力室气相介质流动数值模型,并计算典型结构和工况条件下气相介质流动速度和压力;根据量纲分析方法推导推力室气相介质流动相似准则,借助相似准则提出推力室气相介质流动速度和压力的无量纲表达方法;以正交试验方案组织多种结构和工况参数下的推力室气相介质流动数值计算,并以数值计算结果为输入确定了气相介质流动速度和压力的无量纲表达式.To explore a convenient expression of gas f low in the thrust chamber of space rocket engine, the similarity analysis of gas flow in the thrust chamber is carried out. Firstly, anumerical model is built to descride the gas flow in the thrust chamber,and the gas flow veloctiy and pressure are calculated under typical strucyure and operating conditions.Secondly ,the similarity criteria of gas flow are derived based on dimensional analysis.The dimensionless expression method of gas flow velocity and pressure in thrust chamber is promoted with the similarity criteria.Then the numerical calculation under various strcture and operating parameters is organizaed with an orthogonal design plan.Lastly,the dimensionless expression of gas flow velocity and pressure is obtained with the numerical results as input.

关 键 词：空间发动机 燃烧室 气相 数值模型 相似准则 

分 类 号：V434[航空宇航科学与技术—航空宇航推进理论与工程]