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超燃冲压发动机凹腔稳焰器非定常现象的数值研究
孙晓峰; 姜宗林; 王春
Source Publication北京力学会第17届学术年会论文集
2011
Pages43-45
Conference Name北京力学会第17届学术年会
Conference Date2011
Conference Place中国北京
Abstract数值研究了冷态及化学反应流动情况下超燃冲压发动机中壁面二维凹腔火焰稳定器流场的非定常特性。模拟了凹腔剪切层的演化发展过程,并得到凹腔诱导的超声速流场振荡的频谱分布。针对上游有缝式燃料射流和有化学反应的情况进行了对比。并结合计算结果阐述了凹腔火焰稳定器的流动周期特性和稳焰作用机理。无射流情况下得到的振荡频率和Rossiter预测结果基本一致,射流的影响使剪切层升高且厚度增加,涡合并过程更充分,同时压力振荡幅度增大,频率减小。有化学反应情况下,释热的作用使剪切层进一步被托高,厚度进一步增大。
Keyword超燃 凹腔 剪切层 非定常
DepartmentLHD激波与爆轰物理
Funding Organization北京力学会
URL查看原文
Language中文
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/45293
Collection高温气体动力学国家重点实验室
Corresponding Author孙晓峰
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孙晓峰,姜宗林,王春. 超燃冲压发动机凹腔稳焰器非定常现象的数值研究[C]北京力学会第17届学术年会论文集,2011:43-45.
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