摘要
为了研究燃料组合超燃冲压发动机的燃烧性能,采用离散相模型(DPM)对发动机的流动燃烧特性进行了数值模拟研究。研究结果表明:粉末/液体燃料组合能够在超燃冲压发动机中实现点火燃烧;燃料混合当量比的增加可以提高燃烧室压力和温度,对发动机的燃烧性能有促进作用;适当增大组合燃料中煤油的掺混比例能够在提高铝粉颗粒的燃烧效率,有利于改善发动机的比冲性能。研究结果能为新概念超燃冲压发动机的设计提供参考。
To investigate its working characteristics,based on Numerical simulation,the flow combustion characteristics and performance of the scramjet were numerically studied by adopting discrete phase model(DPM).The simulation results indicate that the combination of powder fuel and liquid fuel can achieve ignition and combustion in scramjet.The increase of the mixed fuel equivalence ratio can enhance the pressure and temperature of the combustor,and promote the combustion performance of the scramjet.Besides,properly increasing the blending ratio of kerosene in the combined fuel can improve the combustion efficiency of aluminum powder particles,to a certain extent,which is conducive to improving the specific impulse performance of the scramjet.The study results can provide a reference for the design of new concept scramjet.
作者
台经华
卓长飞
蒋显松
蔡雨娇
TAI Jinghua;ZHUO Changfei;JIANG Xiansong;CAI Yujiao(School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;Zhengzhou Institute of mechanical and electrical engineering of CSMC, Zhengzhou 450015, China;Institute of Precision Equipment, Chongqing Changan Industries Group Co. , Ltd. , Chongqing 401120, China)
出处
《兵器装备工程学报》
CAS
北大核心
2020年第11期134-140,共7页
Journal of Ordnance Equipment Engineering
基金
国家自然科学基金项目(11602109)。
