关键词: 涡轮叶片;扰流器;喷射冲击;实验;流动分布;压力系数

Abstract: The flow fields and pressure fields around a row of short cylinder with jet impingement with pressure scan valve and five hole probe were measured Static pressure distributions on the endwall of channel and cylinder on the surfaces were revealed and studied The experimental data shows that the largest velocity was observed at the place very close to the cylinder surface Velocities decreased rapidly in lateral direction from the surface to the symmetric plane of the channel where low velocity flow was found together with reverse flow and vortex Pressure coefficient was dropped rapidly behind jet plate Then it came back gradually along flow direction The angular position of separation on the surfaces of cylinder was different at different Reynolds number, and it moved downstream while increasing Reynolds number The correlation of pressure loss coefficient, cylinder spacing and distance from jet plate to cylinder with Reynolds number is built based on the experimental data

Key words: Turbine blade;Spoiler;Jet impingement;Experimentation;Flow distribution;Pressure coefficient