Journal of Zhejiang University SCIENCE A

, Volume 12, Issue 3, pp 214-222

First online:

Prediction of thermal fatigue life of a turbine nozzle guide vane

  • Xin-qian ZhengAffiliated withState Key Laboratory of Automotive Safety and Energy, Tsinghua University Email author 
  • , Tao DuAffiliated withBeijing Power Machinery Research Institute
  • , Yang-jun ZhangAffiliated withState Key Laboratory of Automotive Safety and Energy, Tsinghua University

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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.

Key words

Engine Nozzle guide vane Thermal fatigue (TF) life Solid-fluid

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