Impact of Stagger Angle Nonuniformity on Turbine Aerodynamic Performance

作     者：Weihao Zhang Zhengping Zou Shangneng Pan Huoxing Liu Huoxing Liu Wei Li 

作者机构：National Key Laboratory of Science and Technology on Aero-Engines School of Jet Propulsion Beihang University Beijing 100191 China Aeroengine Numerical Simulation Research Center B eihang University Beijing 100191 China Chinese Aviation Powerplant Research Institute Zhuzhou 412002 China 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2010年第19卷第5期

页      面：465-472页

核心收录：

学科分类：081901[工学-采矿工程] 0819[工学-矿业工程] 082502[工学-航空宇航推进理论与工程] 08[工学] 0825[工学-航空宇航科学与技术] 

基　　金：supported by National Nature Science Foundation of China under Grant Number 50776003 the Innovation Foundation of BUAA for PhD Graduates 

主　　题：assembling error stagger angle nonuniformity turbine aerodynamic performance 

摘      要：The assembling error may lead to variation in stagger angles,which would affect the aerodynamic performance of the *** investigate this underlying effect,two parallel numerical experiments on two turbines with the same profile,but uniform and nonuniform vane stagger angle respectively,were conducted in both steady and unsteady *** results indicate that certain changes in the detailed flow field of the turbine occur when the stagger angles are nonuniform,further,the blade loading distribution of the vane and rotor become markedly different from that in uniform vane stagger angle *** these consequences caused by nonuniformity mentioned above enhance the unsteadiness of the flow,finally,the aerodynamic performance changes *** also shows that,compared with steady simulation,the unsteady numerical simulation is necessary in this investigation.