An Experimental Investigation on the Trailing Edge Cooling of Turbine Blades

摘要：

An experimental study was conducted to quantify the flow characteristics of wall jets pertinent to trailing edge cooling of turbine blades. A high-resolution stereoscopic PIV system was used to conduct detailed flow field measurements to quantitatively visualize the evolution of the unsteady vortex and turbulent flow structures in cooling wall jet streams and to quantify the dynamic mixing process between the cooling wall jet streams and the main stream flows. The detailed flow field measurements are correlated with the adiabatic cooling effectiveness maps measured by using pressure sensitive paint (PSP) technique to elucidate underlying physics in order to improve cooling effectiveness to protect the critical portions of turbine blades from the harsh ambient conditions.

关键词： trailing edge cooling wall slot jets stero piv measurements psp technique

作者: Zifeng Yang Anand Gopa Kumar Hui Hu

作者单位: Department of Aerospace Engineering Iowa State University, Ames, Iowa, 50011

会议类型: 国际会议

会议名称: The 3rd International Symposium on Jet Propulsion and Power Engineering(第三届喷气推进与动力工程国际会议 ISJPPE)

会议地点: 南京

会议语种:英文

页码: 367-374

在线出版日期: 2010-09-13（万方平台首次上网日期，不代表论文的发表时间）