内燃波转子泄漏及密封问题分析

推进技术 ›› 2016, Vol. 37 ›› Issue (10): 1952-1957.

内燃波转子泄漏及密封问题分析

巩二磊,李建中,刘博强,韩启祥

南京航空航天大学能源与动力学院，江苏南京 210016,南京航空航天大学能源与动力学院，江苏南京 210016,南京航空航天大学能源与动力学院，江苏南京 210016,南京航空航天大学能源与动力学院，江苏南京 210016

发布日期:2021-08-15
作者简介:巩二磊，男，博士生，研究领域为非定常燃烧技术以及内燃波转子关键技术。
基金资助:
国家自然科学基金(51476077)；江苏省研究生培养创新工程(KYLX-0299)。

Analysis of Wave Rotor Combustor Leakage and Seal Problems

College of Energy and Power Engineering，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China,College of Energy and Power Engineering，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China,College of Energy and Power Engineering，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China and College of Energy and Power Engineering，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China

Published:2021-08-15

摘要/Abstract

摘要： 为了说明泄漏对内燃波转子的影响，并探索有效的密封措施，建立了单通道简化内燃波转子模型，利用丙烷为燃料，空气为氧化剂，采用多步详细化学反应机理，数值模拟了泄漏问题对内燃波转子点火及燃烧过程的影响。计算结果表明泄漏的存在严重影响内燃波转子性能，甚至会导致点火失败，当波转子通道端面与定子之间间隙到达0.7mm时，波转子通道内不能形成稳定传播的火焰。冷态密封试验结果表明，采用胀圈密封之后，波转子密封问题得到明显改善，且在进口总压分别为0.01MPa和0.02MPa时，实现了内燃波转子冷态增压效果。

关键词: 波转子；内燃波转子；泄漏；泄漏间隙；密封方案；胀圈密封

Abstract: In order to reveal the effects of leakage on wave rotor combustor，and explore effective sealing measures，a simplified single channel wave rotor combustor model was established. Propane and air were used as fuel and oxidizer respectively. And a multi-step reaction model was used to numerically study the effects of leakage problem on the ignition and combustion process of wave rotor combustor. The calculated results show that the leakage problem seriously affects the performance of wave rotor combustor，even leads to the ignition failure. When the gap between the channel end face of wave rotor and the stator reaches 0.7mm，the stable flame cannot be formed in the wave rotor channel. The results of cold sealing test indicate that the sealing problems of wave rotor show obvious improvement after using the expansion ring seal. And when the inlet total pressure is 0.01MPa and 0.02MPa respectively，the effect of cold supercharging is achieved.

Key words: Wave rotor；Wave rotor combustor；Leakage；Leakage gap；Sealing scheme；Expansion ring sealing

巩二磊,李建中,刘博强,韩启祥. 内燃波转子泄漏及密封问题分析[J]. 推进技术, 2016, 37(10): 1952-1957.

GONG Er-lei,LI Jian-zhong,LIU Bo-Qiang,HAN Qi-xiang. Analysis of Wave Rotor Combustor Leakage and Seal Problems[J]. Journal of Propulsion Technology, 2016, 37(10): 1952-1957.

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