| 闭口管内气体非线性振荡研究 |
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| 引用本文： | 刘君,郭正,瞿章华.闭口管内气体非线性振荡研究[J].推进技术,2000,21(4):32-35. |
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| 作者姓名： | 刘君 郭正 瞿章华 |
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| 作者单位： | 国防科技大学,航天与材料工程学院,湖南,长沙,410073 |
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| 摘 要： | 采用新型的计算效率较高的ＥＮＯ差分模式，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。计算发展小扰动情况下，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。
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| 关 键 词： | 固体推进剂火箭发动机 闭口管 气体 非线性振荡 |
Numerical simulation of nonlinear gas oscillations in closed pipe |
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| Liu Jun,Guo Zheng and Qu Zhanghua.Numerical simulation of nonlinear gas oscillations in closed pipe[J].Journal of Propulsion Technology,2000,21(4):32-35. |
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| Authors: | Liu Jun Guo Zheng and Qu Zhanghua |
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| Institution: | Inst.of Aerospace and Material Engineering,National Univ.of Defence Technology,Changsha 410073,China;Inst.of Aerospace and Material Engineering,National Univ.of Defence Technology,Changsha 410073,China;Inst.of Aerospace and Material Engineering,National Univ.of Defence Technology,Changsha 410073,China |
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| Abstract: | 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 |
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| Keywords: | Solid propellant rocket engine Propellant combustion Vibrational combustion Shock wave Disturbance |
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