Influence of Different Design Parameters on Nozzle Efficiency of Liquid Oxygen Methane Engine
In order to better and faster calculate nozzle performance,a program for calculating the chemical dynamic flow field of two dimensional nozzles is developed by using the method of characteristic and boundary layer correction.The nozzle field corresponding to different for a liquid oxymethane engine,and the influence of different design parameters on nozzle efficiency are studied,the design parameters include thrust,chamber pressure,nozzle area ratio and nozzle outlet angle,etc.Geometric loss,boundary layer loss and chemical dynamic loss are considered in the calculation of nozzle efficiency.The results show that the program can obtain the number important for engineer quickly and accurately,improve the simulation efficiency greatly,and can be used to optimize the nozzle contour.
liquid oxygen methane enginenumerical simulationnozzle efficienciesmethod of characteristicboundary layer correction
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