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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2011, Vol. 12 Issue (3): 214-222    DOI: 10.1631/jzus.A1000233
Energy Engineering     
Prediction of thermal fatigue life of a turbine nozzle guide vane
Xin-qian Zheng, Tao Du, Yang-jun Zhang
State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China, Beijing Power Machinery Research Institute, Beijing 100074, China
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Abstract  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     
Received: 19 June 2010      Published: 09 March 2011
CLC:  V235.1  
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Xin-qian Zheng
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Xin-qian Zheng, Tao Du, Yang-jun Zhang. Prediction of thermal fatigue life of a turbine nozzle guide vane. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2011, 12(3): 214-222.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A1000233     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2011/V12/I3/214

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