中文摘要：

基于压力隐式算子分割(PISO)算法,通过求解Navier-Stokes方程,对煤油/气氧/气氢三组元火箭发动机两相燃烧进行了数值仿真,得到了燃烧自激振荡的仿真结果;根据燃烧室压力变化,通过实时调节推进剂流量,对液体火箭发动机燃烧不稳定进行主动控制。仿真结果表明:对液体火箭发动机不稳定燃烧进行主动控制是可行的;通过调节推进剂流量的3%就可以抑制燃烧不稳定。

英文摘要：

Basing on PISO algorithm,numerical simulation of two phase combustion of tripropellant (kerosene/O_2/H_2)liquid rocket engine was studied by solving Navier-Stokes equations,and the com- bustion self-oscillations were gained.According to real time adjusting of propellant flow,based on the variety of combustor pressure,combustion instability is controlled actively.The results show that it is feasible that combustion instability of liquid rocket engine can be controlled actively.Combustion instability can be c...