高温氧化铝液滴沉积条件下绝热材料烧蚀实验方法研究

推进技术 ›› 2017, Vol. 38 ›› Issue (6): 1402-1408.

高温氧化铝液滴沉积条件下绝热材料烧蚀实验方法研究

关轶文,李江,刘洋,惠昆

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:关轶文，男，博士生，研究领域为固体火箭燃烧、流动和热结构。
基金资助:
国家自然科学基金资助项目(51276150；51576165)；中央高校基本科研业务费(3102014ZD0032)。

Experimental Method Research on Ablation Characteristic of Insulation Material under High Temperature Alumina Droplet Deposition Condition

National Key Laboratory of Combustion，Flow and Thermo-Structure，Northwestern Polytechnical University，Xi’an 710072，China,National Key Laboratory of Combustion，Flow and Thermo-Structure，Northwestern Polytechnical University，Xi’an 710072，China,National Key Laboratory of Combustion，Flow and Thermo-Structure，Northwestern Polytechnical University，Xi’an 710072，China and National Key Laboratory of Combustion，Flow and Thermo-Structure，Northwestern Polytechnical University，Xi’an 710072，China

Published:2021-08-15

摘要/Abstract

摘要： 为了深入了解固体火箭发动机高温高压环境中氧化铝沉积条件下绝热材料的传热烧蚀规律，从全尺寸发动机中液滴流动状态与沉积规律入手，结合凝聚相颗粒与壁面的相互作用机理，确定了Sommerfold数K作为壁面捕获准则，发展了一种能够模拟高温氧化铝沉积条件下绝热材料烧蚀的实验方法。三维两相数值模拟和实验结果表明:实验装置沉积段内凝相液滴流动状态与全尺寸发动机背壁凹腔内相似，且绝热材料烧蚀率相近。据此证明，此装置后续可用于开展氧化铝液滴沉积条件下绝热材料烧蚀特性的实验研究。

关键词: 固体火箭发动机；绝热层；沉积；烧蚀；实验装置

Abstract: In order to thoroughly understand the heat transfer and ablation law of insulation material in Solid Rocket Motor(SRM)under high temperature and high pressure environment，the liquid flow pattern and deposition law in full-scale rocket motor was discussed combined with the interaction mechanism between alumina droplet and solid surface. The Sommerfold number K was selected as the capture rule，then an experimental method was developed to simulate the ablation phenomenon of insulation material under high temperature alumina deposition. Three dimensional two phase numerical simulation and experimental results show that the alumina droplet flow state and insulation material ablation rate in lab-scale device are similar to chose of the back-wall cavity of the full-scale motor. Based on the above，it is proved that the lab-scale device can be used to perform the experimental study of the insulation material ablation characteristics under the condition of high temperature alumina droplet deposition in the future.

Key words: Solid propellant rocket motor；Insulation material；Deposition；Ablation；Experimental device

关轶文,李江,刘洋,惠昆. 高温氧化铝液滴沉积条件下绝热材料烧蚀实验方法研究[J]. 推进技术, 2017, 38(6): 1402-1408.

GUAN Yi-wen,LI Jiang,LIU Yang,XI Kun. Experimental Method Research on Ablation Characteristic of Insulation Material under High Temperature Alumina Droplet Deposition Condition[J]. Journal of Propulsion Technology, 2017, 38(6): 1402-1408.

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