直射式喷孔后方燃油浓度场计算及其分析

推进技术 ›› 2011, Vol. 32 ›› Issue (5): 690-693.

直射式喷孔后方燃油浓度场计算及其分析

王永卫,朱永刚,牛志刚,王健

中国航天科工集团三十一研究所高超声速冲压发动机技术重点实验室;北京航天华盛科贸发展有限公司;中国航天科工集团三十一研究所高超声速冲压发动机技术重点实验室;中国航天科工集团三十一研究所高超声速冲压发动机技术重点实验室

发布日期:2021-08-15

Calculation and analysis of fuel concentration at the rear of spray injecting element

Science and Technology on Scramjet Lab.,The 31st Research Institute of CASIC,Beijing 100074,China;Beijing Aerospace Huasheng Scientific Trade Development Co.Ltd.,Beijing 100074,China;Science and Technology on Scramjet Lab.,The 31st Research Institute of CASIC,Beijing 100074,China;Science and Technology on Scramjet Lab.,The 31st Research Institute of CASIC,Beijing 100074,China

Published:2021-08-15

摘要/Abstract

摘要： 由于直射式喷油孔的结构简单、布置和调整方便,因此已被广泛地应用于冲压发动机的燃烧室中,而且喷孔后方的燃油浓度分布对火焰稳定及燃烧效率有很大影响,由此预知喷孔后方燃油浓度分布对喷孔布置、确定喷孔与稳定器的相对位置是十分重要的。根据试验结果,推导得到了直射式喷孔后方燃油浓度分布的计算公式,编制燃油浓度分布的计算程序,以分析直射式喷油孔后方的燃油浓度场分布。

关键词: 直射式喷孔;燃油浓度场;燃烧效率

Abstract: Because of its simple structure,arrangement and convenient adjustment,spray injecting element is extensively applied to the combustion chamber of ramjet engine,and the rear concentration of spray injecting element has important influence on flame stability and combustion efficiency,thus the precognition of fuel concentration is very important to spray injecting element arrangement and the relative position between spray injecting element and flame holder is extremely important.According to test result,this paper deduced the formula of fuel concentration at the rear of spray injecting element,and developed the calculation procedure of fuel concentration,thus fuel concentration at the rear of spray injecting element is analyzed.

Key words: Spray injecting element;Fuel concentration;Combustion efficiency

王永卫,朱永刚,牛志刚,王健. 直射式喷孔后方燃油浓度场计算及其分析[J]. 推进技术, 2011, 32(5): 690-693.