弯曲壁上开孔倾角对气膜孔流量系数的影响

张弛; 赵梦梦; 林宇震; 刘高恩

弯曲壁上开孔倾角对气膜孔流量系数的影响

北京航空航天大学能源与动力工程学院航空发动机气动热力重点实验室, 北京 100083

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出版历程
- 收稿日期: 2006-06-05
- 修回日期: 2006-10-10
- 刊出日期: 2007-07-28

Effect of inclined angle on discharge coefficient of the discrete holes in curved wall

National Key Laboratory on Aero-Engins, School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

摘要

摘要: 对弯曲壁上的多孔气膜冷却方式的流量系数进行了实验研究, 目的是确定在一定曲率的弯曲壁上不同开孔倾角冷却孔的平均流量系数随压力参数的变化规律, 并从流动损失方面进行深入分析.研究结果表明, 对于几何参数一定的多孔冷却方式, 影响其流量系数的气动因素用压力参数来表示是合理的, 但对于不同的开孔倾角, 压力参数对流量系数的影响效果有很大差别.
- 航空、航天推进系统 /
- 航空发动机 /
- 弯曲壁 /
- 多孔气膜冷却 /
- 流量系数 /
- 压力参数
Abstract: An experimental investigation was conducted on the discharge coefficient of multi-holes cooling with different inclined angles in the curved wall for an aircraft engine combustor.The research purpose is to obtain the tendency of the average discharge coefficients with the pressure parameter,one of the most important influencing factors,and to analyze the flow dynamics.The research results indicate that as an aerodynamics factor the pressure parameter has significant impact on the discharge coefficient of the discrete holes for a given geometrical configuration,and for different inclined angles it has different effects.
- aerospace propulsion system /
- aircraft engine /
- curved wall /
- multi-holes cooling /
- discharge coefficient /
- pressure parameter

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参考文献(12)

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