Three Groups Of Rocket Engine Thrust Chamber Combustion Performance Numerical Simulation Study

A new numerical simulation programme aimed to gaseous hydrogen and gaseous oxygen and kerosene tri-propellant engine , is developed with existing spray and combustion theory and models for liquid rocket engine . The reliability of the simulation programme is validated by comparing numerical simulation result with engine test data, and used to consider the influence of different inner injector indent distance and different combustion chamber length on engine performance .The numerical simulation result shows that different indent distance of inner injector has no evident influence on engine performance, although the engine performance is improved better as inner injector indent distance increases. Longer the combustion chamber is, better propellant combusts, but when combustion chamber approaches a certain length, the influence of combustion chamber length on engine performance is small.