Large Eddy Simulation on Compound Angle Film Cooling of Turbine Blades

摘要：

Large Eddy Simulation (LES) was performed to investigate the flow structures and the development process of vortices in different sections of a stationary gas turbine at M=1.5, while the jet hole of the leading edge has compound angle. The results show that the jet in a cross-flow is a highly complex turbulent flow due to the action of many structures in the field, including the jet shear-layer vortices, the system of horseshoe vortices, the counter-rotating vortex pair, and the wake vortices. The cooling effectiveness is better on the suction side and on the pressure side with laying compound angles film-cooling holes. The vortices in the centreplane are shed off to form new vortices periodically with period of 0.04s. The generation of CVP on the pressure side is earlier than that on the suction side and the effect of CVP on the pressure side is stronger than that on the suction side.

关键词： Film cooling large eddy simulation compound angles counter-rotating vortex pair.

作者: Zhang Ling Wen Guoliang

作者单位: School of Energy and Power Engineering,Northeast Dianli University 132012 Jilin,Jilin Province,China

会议类型: 国际会议

会议名称: 2011 10th International Conference on Electronic Measurement & Instruments(第十届电子测量与仪器国际会议 ICEMI2011)

会议地点: 成都

会议语种:英文

页码: 282-287

在线出版日期: 2011-08-16（万方平台首次上网日期，不代表论文的发表时间）