| 声腔应用于液体火箭发动机不稳定燃烧抑制中的特性研究 |
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| 引用本文： | 聂万胜,庄逢辰.声腔应用于液体火箭发动机不稳定燃烧抑制中的特性研究[J].国防科技大学学报,1998,20(2):12-16. |
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| 作者姓名： | 聂万胜 庄逢辰 |
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| 作者单位： | 国防科技大学航天技术系 |
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| 摘 要： | 本文针对抑制液体火箭发动机不稳定燃烧的声学装置——赫姆霍兹声腔和四分之一波长管声腔进行了研究。讨论了在声腔设计安排中正确选择声腔的数目，且比较了不同长度声腔的阻尼特性。通过考察声吸收系数的方法来最优化系统的阻尼，得到了可供设计参考的结论。
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| 关 键 词： | 高频燃烧不稳定抑制装置，赫姆霍兹声腔，四分之一波长管声腔，阻尼特性，声吸收系数 |
| 收稿时间： | 1997/8/27 0:00:00 |
The Study of Characteristics of Resonators Used in Liquid Rockct Engines Combustion Stabilities Suppression |
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| Nie Wansheng and Zhuang Fengchen.The Study of Characteristics of Resonators Used in Liquid Rockct Engines Combustion Stabilities Suppression[J].Journal of National University of Defense Technology,1998,20(2):12-16. |
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| Authors: | Nie Wansheng and Zhuang Fengchen |
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| Affiliation: | Department of Aerospace Technology, NUDT, Changsha, 410073;Department of Aerospace Technology, NUDT, Changsha, 410073 |
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| Abstract: | Helmholtz resonators and quarter-wave resonators are studied as the high-frequency combustion instabilities suppression devices in liquid rocket engines. Proper selection of the number of the resonators within the absorber arrangement is discussed. The damping characteristics of various length resonators are compared. Optimizing the system's damping by means of the absorption coefficient is suggested. The valuable results are proposed for designers. |
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| Keywords: | high frequency combustion instabilities suppression devices Helmholtz resonators quarter wave resonators damping characteristics absorption coefficient |
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