实验流体力学2012，Vol.26Issue(3)：56-60,5.
透平叶片顶部间隙流动特性的实验和数值研究
Experimental and numerical investigation on turbine blade tip leakage flow characteristics
摘要
Abstract
The flow characteristics of turbine blade tip leakage were measured with a particle image velocimetry (PIV) system, and the experimental data was used to estimate the turbulence model and numerical simulation conducted with commercial software CFX12. 0. The test model was a typical GE-E3 blade. To exhibit the generation and development of leakage vortex, three velocity distribution profiles obtained by the PIV system are exhibited. Hybrid mesh generation process and five turbulence models were used during the numerical simulation. Through comparison of experimental data with the simulation results, it can be seen that the vortex obtained by vising RNG k-ε model was closer to that captured by PIV system. This turbulence model and numerical approach can be used to estimate the effects of blade tip injection, The numerical results indicated that with coolant injection through the film holes at the blade tip, the leakage flow rate can be reduced by 6, 12% at most.关键词
PIV/泄漏流/数值模拟/泄漏涡/湍流模型Key words
PIV/tip leakage flow/numerical simulation/leakage vortex/turbulence model分类
航空航天引用本文复制引用
张洪,王建华,张清波..透平叶片顶部间隙流动特性的实验和数值研究[J].实验流体力学,2012,26(3):56-60,5.基金项目
国家自然科学基金(10772175)及中航一集团资助 （10772175）
