固体火箭发动机径向加质流局部稳定性分析方法研究

推进技术 ›› 2013, Vol. 34 ›› Issue (7): 925-931.

固体火箭发动机径向加质流局部稳定性分析方法研究

杨尚荣, 刘佩进, 魏祥庚, 金秉宁

西北工业大学燃烧、热结构与内流场重点实验室,陕西西安 710072;西北工业大学燃烧、热结构与内流场重点实验室,陕西西安 710072;西北工业大学燃烧、热结构与内流场重点实验室,陕西西安 710072;西北工业大学燃烧、热结构与内流场重点实验室,陕西西安 710072

发布日期:2021-08-15
作者简介:杨尚荣(1986—),男,博士生,研究领域为固体火箭发动机燃烧不稳定。E-mail:yangnihaoma@yahoo.cn
基金资助:
国家自然科学基金(51206136)。

A Study of Analysis Method for Hydrodynamic Stabilities of Solid Rocket Motors with Side-Induced Flow

Science and Technology on Combustion, Internal Flow and Thermal-Structure Laboratory, Northwestern Polytechnical University, Xi’an 710072, China;Science and Technology on Combustion, Internal Flow and Thermal-Structure Laboratory, Northwestern Polytechnical University, Xi’an 710072, China;Science and Technology on Combustion, Internal Flow and Thermal-Structure Laboratory, Northwestern Polytechnical University, Xi’an 710072, China;Science and Technology on Combustion, Internal Flow and Thermal-Structure Laboratory, Northwestern Polytechnical University, Xi’an 710072, China

Published:2021-08-15

摘要/Abstract

摘要： 应用局部非平行流动稳定性理论研究了大长径比固体火箭发动机内的表面涡脱落现象。分析了由主变量公式和流函数公式导出的扰动方程的差异,以及流动参数对稳定性的影响,发现两种扰动方程对最不稳定波频率的预估值小于2%,且该频率沿流向逐渐增加。比较了基于空间发展模式的理论结果与大涡模拟计算结果,发现在不发生共振的情况下,理论方法可以较好地预估发动机内的流动不稳定频率。 

关键词: 流动稳定性;固体火箭发动机;局部非平行方法;大涡模拟 

Abstract: A local non-parallel (LNP) hydrodynamic stability approach was applied to investigate the partial vortex shedding phenomenon observed in solid rocket motors with side-induced flow with large length to radius ratio. Two disturbance equations based on stream function formulation and primitive variable formulation were solved and results were compared. The effects of flow parameters on stability results are obtained. It is showed that the predicted values of the most unstable frequencies by two disturbance equations differ less than 2% and the frequencies increase along streamwise. Large Eddy Simulations were performed on two different configurations and compared with the results obtained by the LNP method based on spatial evolution of the flow instabilities. The comparison shows good agreement in a certain degree in terms of amplified frequency range when no resonance happens. 

Key words: Hydrodynamic stability; Solid rocket motor; LNP method; Large eddy simulation

杨尚荣,刘佩进,魏祥庚,金秉宁. 固体火箭发动机径向加质流局部稳定性分析方法研究[J]. 推进技术, 2013, 34(7): 925-931.

YANG Shang-rong, LIU Pei-jin, WEI Xiang-geng, JIN Bing-ning. A Study of Analysis Method for Hydrodynamic Stabilities of Solid Rocket Motors with Side-Induced Flow[J]. Journal of Propulsion Technology, 2013, 34(7): 925-931.

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