Experiment on Adiabatic Film Cooling Effectiveness in Front Zone of Effusion Cooling Configuration  

作　　者：杨志民 张靖周 

机构地区：[1]School of Energy and Power Engineering,Beihang University [2]Shenyang Engine Design and Research Institute,Aviation Industry Corporation of China [3]Jiangsu Province Key Laboratory of Aerospace Power System,Nanjing University of Aeronautics and Astronautics [4]Collaborative Innovation Center of Advanced Aero-engine

出　　处：《Transactions of Nanjing University of Aeronautics and Astronautics》2014年第3期338-344,共7页南京航空航天大学学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(51276090)

摘　　要：Experimental investigation is performed to investigate the cooling characteristics in the front zone of effusion configuration. Effects of blowing ratio,multi-hole arrangement mode,hole-to-hole pitch and jet orientation angle on the adiabatic film cooling effectiveness are concentrated on. The results show that the film layer displays an obvious"developing"feature in the front zone of effusion cooling scheme,for either the staggered or inline multi-hole arrangement. The varying gradient of the laterally-averaged adiabatic cooling effectiveness along the streamwise direction is greater for the staggered arrangement than that for the inline arrangement. The holes array arranged in staggered mode with small hole-tohole pitches is in favor of obtaining developed film coverage layer rapidly.Experimental investigation is performed to investigate the cooling characteristics in the front zone of effusion configuration. Effects of blowing ratio, multi-hole arrangement mode, hole-to-hole pitch and jet orientation angle on the adiabatic film cooling effectiveness are concentrated on. The results show that the film layer displays an obvious ＂developing＂ feature in the front zone of effusion cooling scheme, for either the staggered or inline multi-hole arrangement. The varying gradient of the laterally-averaged adiabatic cooling effectiveness along the streamwise direction is greater for the staggered arrangement than that for the inline arrangement. The holes array arranged in staggered mode with small hole-to-hole pitches is in favor of obtaining developed film coverage layer rapidly.

关 键 词：effusion cooling adiabatic film cooling effectiveness front zone cooling film development 

分 类 号：O324[理学—一般力学与力学基础]