摘要
采用试验和数值模拟的方法研究了梯状间隙结构对轴流压气机转子性能以及内部流动的影响,在某单级轴流压气机试验台上,在5059r／min和8130r／min两个换算转速下分别对三种不同的机匣结构进行了详细的试验测试,结果表明:与具有设计间隙的实壁机匣结构相比,两个转速下梯状间隙结构的引入能够在扩大压气机的稳定工作裕度的同时使得压气机所有流量工况下的压比和效率均有一定程度的改善;对具有梯状间隙的压气机转子内部流场进行了详细的数值模拟,揭示阶梯状间隙结构内部流动机理。
The effects stepped tip gaps on the performance and flow field of a subsonic axial flow compressor rotor were experimentally and numerical investigated. Three different casing configurations were designed and tested on a subsonic axial compressor. Experiments were taken under both 5059 r/min and 8013 r/min conversion speeds. The experimental results showed that the inclusion of stepped tip gaps gave increased pressure ratio, efficiency, and stall margin throughout the mass flow range at both speeds if compared with the baseline case with design tip clearance level. Numerical simulation was performed for the compressor rotor with stepped tip gaps to uncover the complexities of stepped tip gaps flow phenomena.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2005年第2期234-236,共3页
Journal of Engineering Thermophysics
基金
国家自然科学基金资助项目(No.50176040)西北工业大学博士论文创新基金资助
关键词
轴流压气机
梯状间隙
机匣处理
axial-flow compressor
stepped tip gap
casing treatment
