摘要
为了研究尾喷管构型对多循环工况下非定常气液两相脉冲爆轰发动机推进性能的影响,运用适应能力强的非结构网格CE/SE(时空守恒元和求解元)方法数值研究了带尾喷管脉冲爆轰发动机的内外流场.结果表明:尾喷管对脉冲爆轰发动机性能的影响在单次循环和多循环工况下有显著差异;当燃料填充率为1、环境压力为0.1MPa时,完成一个周期各种构型尾喷管产生的平均推力由大到小依次为拉伐尔喷管、塞式收敛扩张喷管、收敛喷管、无喷管、直喷管;研究中塞式收敛扩张喷管可以提供最大的冲量和燃料比冲,但完成单个循环的周期最长.
The CE/SE (conservation element/solution element) method using adaptable unstructured meshes was derived and applied to calculate the inner and outer flow fields of multi-cycle two-phase pulse detonation engines (PDEs) with different types of nozzles. It was found that the propulsive performance of multi-cycle PDEs with nozzles differed a lot from that of one-cycle PDEs with nozzles. The Laval nozzle offered the highest average thrust in a cycle, while the plug-in-convergent-divergent nozzle provided the maximum im pulse and fuel-specific impulse in the longest operation cycle when the nozzles were filled with fuel and the ambient pressure was 0.1MPa.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2013年第10期2256-2266,共11页
Journal of Aerospace Power
基金
中央高校基本科研业务费专项资金(30920130112007)
预研基金(9140c300202120c30)
关键词
两相爆轰
多循环
CE
SE方法
非结构网格
塞式收敛扩张喷管
推进性能
two-phase detonation
multi-cycle
CE/SE method
unstructured meshlplug-in-convergent-divergent nozzle
propulsive performance
作者简介
王研艳(1985-),女,江苏盐城人,博士生,研究方向为脉冲爆轰推进.
通讯作者:翁春生(1964-),男,福建莆田人,教授、博士生导师,博士,主要研究方向为推进技术.E-mail:wengcs@126.com