摘要
采用新型的计算效率较高的ENO差分格式 ,从一维非定常Euler方程出发 ,对受扰动气体在闭口管内的传播现象进行了数值模拟。计算发现小扰动情况下 ,当激振频率接近管内气体的固有频率时会发生非线性振荡 ,有激波产生 ;但当扰动较大时 ,激振频率的影响变得不明显。
The phenomenon of oscillating gas in a closed pipe was simulated numerically based on one-dimensional Euler equatio using a new ENO scheme It was indicated that the slight disturbance might induce nonlinear oscillations with shock waves when the stimulating frequency was approximate to the intrinsic frequency of the pipe But when the disturbance was strong, the frequency became unimportant
出处
《推进技术》
EI
CAS
CSCD
北大核心
2000年第4期32-35,共4页
Journal of Propulsion Technology
关键词
固体推进剂火箭发动机
闭口管
气体
非线性振荡
Solid propellant rocket engine
Propellant combustion
Vibrational combustion
Shock wave
Disturbance
