Prediction of thermal fatigue life of a turbine nozzle guide vane  

作　　者：Xin-qian ZHENG Tao DU Yang-jun ZHANG 

机构地区：[1]State Key Laboratory of Automotive Safety and Energy Tsinghua University, Beijing 100084, China [2]Bering Power Macklnery Research Institute, Beijing 100074, China

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2011年第3期214-222,共9页浙江大学学报（英文版）A辑（应用物理与工程）

基　　金：Project (No.50806040) supported by the National Natural Science Foundation of China

摘　　要：Thermal fatigue (TF) is one of the most important factors that influence turbine's life.This paper establishes a 3D solid-fluid coupling model for a steady temperature analysis of a high-pressure turbine nozzle at different turbine inlet gas total temperatures (TIGTTs).The temperature analysis supplies the temperature load for subsequent 3D finite element analysis to obtain the strain values.Following this,the prediction of the TF life is made on the basis of equivalent strain range.The results show that the strain increases with TIGTT,and the predicted TF life decreases correspondingly.This life prediction was confirmed by one TF test.Thermal fatigue （TF） is one of the most important factors that influence turbine＇s life. This paper establishes a 3D solid-fluid coupling model for a steady temperature analysis of a high-pressure turbine nozzle at different turbine inlet gas total temperatures （TIGTTs）. The temperature analysis supplies the temperature load for subsequent 3D finite element analysis to obtain the strain values. Following this, the prediction of the TF life is made on the basis of equivalent strain range. The results show that the strain increases with TIGTT, and the predicted TF life decreases correspondingly. This life prediction was confirmed by one TF test.

关 键 词：ENGINE Nozzle guide vane Thermal fatigue (TF) life Solid-fluid 

分 类 号：V235.1[航空宇航科学与技术—航空宇航推进理论与工程]