排气液化循环发动机推力室性能计算研究

Main Chamber Performance Calculation of Heat Transfer Rocket Engine

用双流管方法分析了液膜对排气液化循环发动机推力室性能的影响。推导了发动机壁面的修正方法,给出了主燃烧区参数、边区流管参数与壁面修正、中心流管性能与双流管性能的计算模型。研究结果表明:液膜冷却会导致少量的性能损失;与常规一维流动不同,双流管的壁面修正不可忽略。

The dual flow tube method was used to calculate the performance for the main combustion chamber（MCC） of the turbine exhaust liquefaction cycle engine（TELCE） in this paper.The inner wall change for the engine was derived.The computation models of the performances of the main combustion area,the boundary area and its wall change,and the center area as well as the dual flow tube were given out.The results showed that there were some energy lost caused by the liquid film cooling.The inner wall change of the dual flow tube which was different with the common single tube,which could not be neglected.