摘要
为了研究带收敛喷管的脉冲爆轰发动机PDE(Pulse Detonation Engine)的推力性能,建立了一维欧拉方程,应用CE/SE方法数值求解.计算分析发现,收敛喷管对脉冲爆轰发动机的内流场产生了重要影响;当喷管收敛角度小于8°时,带收敛喷管的脉冲爆轰发动机的冲量和平均推力比不带喷管时大;带小收敛角度喷管的PDE,其平均推力随喷管长度增加而增大;带大收敛角度的PDE的平均推力随喷管长度增加先增大后减小.研究结果对PDE喷管的设计具有理论指导和参考作用.
To evaluate the propulsive performance of Pulse Detonation Engine(PDE) with different convergent nozzles,the Eular equation is built and solved with CE/SE method.The results of numerical simulation of series of nozzles indicate that the convergent nozzles have an significant effect on the internal flow field of PDE,and that compared with PDE without nozzle,the one with convergent nozzle in a angle less than 8°provides higher impulse and average thrust.For a smaller angle convergent nozzle,the increasing length of nozzle leads to an augmentation on the average thrust of PDE,while for a larger one,the average thrust increases first and then reduces with the increasing length.Therefore,all results here provide some helpful theory guide and reference for the nozzle design of PDE.
出处
《南京师范大学学报（工程技术版）》
CAS
2010年第4期35-40,共6页
Journal of Nanjing Normal University(Engineering and Technology Edition)
基金
高等学校博士学科点专项科研基金(20093219110037)
