摘要
研究脉冲轰发动机效率优化设计问题,由于湍流对两相爆轰流场有较大影响,要求明确两相爆轰流场的特点。为了进一步明确上述问题,提出建立轴对称两相爆轰低雷诺数湍流模型,应用求解元与守恒元方法(简称CE/SE方法)进行数值仿真。仿真结果表明,湍动能随着爆轰波的传播而前进,且湍动能值在管子的中心部位较大。明确气相轴向速度在爆轰波阵面上比径向速度大的特点。仿真也为爆轰湍流流场效能的认识和提高脉冲发动机效能的设计提供了理论指导。
Study about how to optimize the PDE design.The turbulent flow has a great effect on two-phase detonation flow field,so the characteristics of the flow field should be obtained.In order to solve this problem,the axial symmetry model for two-phase turbulent detonation was built.The conservation element and solution element were applied to calculate this problem.The calculation results show： the turbulent energy has the same variety rule of the presser and the its value is bigger in the core of the detonation tube than any other region.The axial detonation wave velocity is much bigger than the radial velocity on the plane of the detonation wave.The results give us the brief knowledge of the turbulent detonation flow field and provide theory guidance to the PDE design.
出处
《计算机仿真》
CSCD
北大核心
2012年第10期84-88,共5页
Computer Simulation
基金
高等学校博士学科点专项科研基金资助项目(20093219110037)
关键词
爆轰
二维
湍流
两相流
数值仿真
Detonation
Two-dimensional
Turbulence
Two-phase fluid
Numerical simulation
