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 |
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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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