An experimental investigation on the trailing edge cooling of turbine blades

被引：44
作者：
Yang, Zifeng [1 ]
Hu, Hui [1 ]
机构：
[1] Iowa State Univ, Dept Aerosp Engn, Ames, IA 50011 USA
来源：
PROPULSION AND POWER RESEARCH | 2012年 / 1卷 / 01期
基金：
美国国家科学基金会;
关键词：
Trailing edge cooling; Wall slot jets; Turbine blades; Steroscopic particleimage velocimetry; (PIV) measurements; Pressure sensitive paint (PSP) technique;
D O I：
10.1016/j.jppr.2012.10.007
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
An experimental study was conducted to quantify the flow characteristics of the wall jets pertinent to trailing edge cooling of turbine blades. A high-resolution stereoscopic particle image velocimetry (PIV) system was used to conduct detailed flow field measurements to quantitatively visualize the evolution of the unsteady vortices and turbulent flow structures in the cooling wall jet streams and to quantify the dynamic mixing process between the cooling jet stream and the mainstream flows. The detailed flow field measurements were correlated with the adiabatic cooling effectiveness maps measured by using pressure sensitive paint (PSP) technique to elucidate underlying physics in order to explore/optimize design paradigms for improved cooling effectiveness to protect the critical portions of turbine blades from harsh environments. (C) 2012 National Laboratory for Aeronautics and Astronautics. Production and hosting by Elsevier B.V. All rights reserved.
引用
收藏
页码：36 / 47
页数：12
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