CHEN Fan1,WANG Suo-fang1,LI He2.Numerical Study on Influence of Width of Guide Vane on Performance of Pre-Swirl System[J].航空发动机,2017,43(5):14-20
Numerical Study on Influence of Width of Guide Vane on Performance of Pre-Swirl System
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Key Words:pre-swirl system guide vane nozzle pressure ratio temperature drop coefficient total pressure loss coefficient
Author NameAffiliationE-mail
CHEN Fan1,WANG Suo-fang1,LI He2 1. College of Energy and Power,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
2. AECC Shenyang Engine Institute,Shenyang 110015,China 
cf861921232@163.com 
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Abstract:In order to reflect fatigue-creep interaction of turbine blade clearly, raise the accuracy and reliability of life prediction result and improve sensitivity of fatigue life to random variables at the same time. low cycle fatigue life and creep life of turbine blade were calculated by Manson-Coffin formula and Larson-Miller equation, fatigue-creep damage was obtained by modified time-life fraction method. Robust optimization design of turbine blade fatigue life was developed by combining RSM 渊Response Surface Methodology冤and FFOA 渊Fruit Fly Optimization Algorithm冤, considering the uncertainty of loads, material parameters and the degree of fatigue-creep interaction. The results show that probability interval of fatigue-creep life for turbine is decreased by 8.48%, which verify the feasibility of this optimization method.
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