钝体/阻流孔式气动阀工作机理及流阻特性研究

李海鹏; 何立明; 李天亮; 蒋永健; 武卫

钝体/阻流孔式气动阀工作机理及流阻特性研究

空军工程大学工程学院, 西安 710038

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出版历程
- 收稿日期: 2007-07-31
- 修回日期: 2007-12-25
- 刊出日期: 2008-08-28

Research on mechanism and flow drag character of an aerodynamic valve with blunt block and backflow damping orifices

The Engineering Institute, Air Force Engineering University, Xi'an 710038, China

摘要

摘要: 针对脉冲爆震发动机的工作特点构思了一种钝体-阻流孔式气动阀,对该气动阀的工作机理进行了分析,通过二维数值方法初步研究了该气动阀的流场分布情况及流阻特性.结果表明:该气动阀具有良好的单向性,出口压力为100kPa时,该气动阀在来流压力100kPa
- 脉冲爆震发动机(PDE) /
- 气动阀 /
- 流阻特性
Abstract: An aerodynamic valve with blunt block and backflow damping orifices was designed for pulse detonation engines(PDEs),and its mechanism was analyzed.The flow field in the aero-valve and the flow drag character were examined numerically.The result shows that the valve presents good single-direction flow performance.The flow is found moving smoothly to the detonation chamber when the pressure at the valve inlet is between100 kPa and 500 kPa.However the drag rises linearly along with the increase of the inlet pressure when the flow direction is reversed.The simulation results in detonation environment show that,the single-direction flow performance,the mixing quality and the exit flow field uniformity of the aerodynamic valve will be enhanced greatly,and the backflow drag rises dramatically.
- pulse detonation engine(PDE) /
- aerodynamic valve /
- flow drag

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参考文献(15)

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