流体机械2018，Vol.46Issue(4)：18-22,60,6.DOI:10.3969/j.issn.1005-0329.2018.04.004
压气机平面叶栅叶顶间隙流动研究
Research on Tip Clearance Flow in a Linear Compressor Cascade
摘要
Abstract
With NACA 65-1810 gas compressor as the research object, the effect of tip clearance on flow characteristics of the compressor was investigated. The structured grids were built in ICEM and SST k-ε double-equation turbulence model was used to make numerical simulation on the compressor flow field for different tip clearance scheme, and the effect of different tip clearance on the aerodynamic performance, leakage vortex and the performance of linear compressor cascade were analyzed. The results show that back flow will appear in the case of tight clearance; reduction of tip clearance not only can better restrain leakage vortex, but also can reduce the total pressure loss so as to improve the efficiency and performance of the linear compressor cascade.关键词
平面叶栅/叶顶间隙/泄漏流动/损失系数Key words
linear cascade/tip clearance/leakage flow/loss coefficient分类
机械制造引用本文复制引用
刘思蓉,王强,高慧峰,靳嵘..压气机平面叶栅叶顶间隙流动研究[J].流体机械,2018,46(4):18-22,60,6.基金项目
国防科技重点试验室基金项目(9140C330109150C3301) （9140C330109150C3301）
