• 首页期刊介绍编委会期刊订阅广告合作联系我们English
  • 选择皮肤:
富庆飞,贾伯琦,杨立军.燃烧室压力振荡对液-液同轴离心喷嘴混合比的影响[J].航空动力学报,2020,(2):294~297
燃烧室压力振荡对液-液同轴离心喷嘴混合比的影响
Effect of combustion chamber pressure pulsation on mixing ratio of liquid-liquid coaxial swirl injector
投稿时间:2019-05-09  
DOI:10.13224/j.cnki.jasp.2020.02.008
中文关键词:  同轴离心喷嘴  混合比  喷嘴动力学  燃烧室  压力振荡
英文关键词:coaxial swirl injector  mixing ratio  injector dynamics  combustion chamber  pressure pulsation
基金项目:国家自然科学基金(11302013); 中央高校基本科研业务费专项资金
作者单位
富庆飞 School of Astronautics,Beijing University of Aeronautics and Astronautics,Beijing 100191,China 
贾伯琦 School of Astronautics,Beijing University of Aeronautics and Astronautics,Beijing 100191,China 
杨立军 School of Astronautics,Beijing University of Aeronautics and Astronautics,Beijing 100191,China 
摘要点击次数: 46
全文下载次数: 63
中文摘要:
      基于液体喷嘴动力学理论,对燃烧室压力振荡引起同轴喷嘴混合比振荡的动态过程进行了理论分析,推导得到了混合比振荡与燃烧室压力振荡之间的传递函数。通过算例计算了液氧煤油双组元喷嘴混合比对室压振荡响应的传递函数的幅频特性。结果表明:混合比振荡幅值随着振荡频率的增加呈现先增加,后减小的趋势。传递函数值随供应系统压力的升高而增大,随喷嘴压降的升高而减小。混合比振荡最大幅值所对应的频率不随供应系统压力和喷嘴压降变化而改变,说明此频率是由双组元喷嘴的特性决定的。
英文摘要:
      Based on the theory of liquid injector dynamics, the dynamic response of coaxial injector mixing ratio to the pressure pulsation in combustion chamber was theoretically studied, and the transfer function between the mixing ratio pulsation and combustion chamber pressure pulsation was also derived. The amplitude-frequency characteristics of the transfer function were calculated with a model liquid oxygen-kerosene bipropellant injector. Results showed that as the pulsation frequency increased, the pulsation amplitude of mixing ratio increased first, then decreased. The amplitude of transfer function increased when the supply system pressure increased, and decreased when the injector pressure drop increased. The frequency corresponding to the maximum amplitude was independent of supply system pressure and injector pressure drop, meaning that this frequency was dependent on the injector characteristics.
查看全文  查看/发表评论  下载PDF阅读器
关闭
.