摘要
本文针对几种不同形态的叶栅顶部间隙，在环壁转动与静止的不同情况下，研究间隙内的泄漏流动对三维粘性流场的影响。结果表明，至少对本文算例而言，在相同的工作条件下，具有适当小间隙的叶栅往往可以获得比无间隙叶栅更高的效率；而在相同的切向泄漏面积下，沿流向渐扩型间隙的叶栅可以获得更高的效率．本文的结果可以从定性和定量的角度为改进设计并合理利用叶栅间隙的泄漏流动提供参考．
In this paper, the influence of tip leakage flow on the 3-D viscous flow field is investigated for different blade tip gap shapes under the condition of rotating hub or stationary hub. The analysis of the results shows, at least for these test cases, on the same working conditions and within a certain range of gap scale, the blade row with smaller tip gap height can attain higher efficiency, and for the same circumferential leakage area in the tip region, the blade row with expanding tip gap height along chord direction can obtain higher efficiency. The work of this paper can provide a useful reference for optimum design of compressor stator.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2001年第4期431-434,共4页
Journal of Engineering Thermophysics
基金
国家重点基础研究项目(No.G1999022309)
国家自然科学基金项目(No.59976046)
国防科技重点实验室基金试
关键词
叶顶间隙形态
气动性能
数值研究
叶轮机械
blade tip gap shapes
aerodynamic performance
numerical investigation
