带机匣处理的离心压气机顶部流场分析研究  

The analysis of tip flow field in a centrifugal compressor with casing treatment

作　　者：高鹏[1] 楚武利[1] 吴艳辉[1] 

机构地区：[1]西北工业大学动力能源学院,西安710072

出　　处：《机械设计与制造》2008年第5期100-102,共3页Machinery Design & Manufacture

摘　　要：在定常计算结果的基础上,对带放气型周向槽的低速离心压气机内部进行了非定常的全三维数值模拟计算。将计算结果与实验结果进行了比较,并详细对比分析了带实壁机匣和放气型周向槽机匣处理的压气机转子顶部区域流场结构以及压气机内部流场,得出放气型周向槽机匣处理的扩稳机理。A time accurate 3-dimentional numerical simulation was performed in a low speed centrifugal compressor with the air bleeding circumferential grooves casing treatment, based on the result cornputed by the steady numerical simulation. The numerical results agreed well with experimental test data for the global performance. Detailed analyses of the flow visualization at the tip of blades and the flow field in the passages have exposed the different tip flow topologies between the cases with casing treatment and with untreated smooth wall The Mechanism of Stall Margin Improvement is gained.

关 键 词：离心压气机 放气型周向槽机匣处理 流场 非定常数值模拟 

分 类 号：TH16[机械工程—机械制造及自动化]