J0501-3-2 航空エンジン用低圧タービン翼の高負荷化に関する研究 : 負荷分布が境界層非定常挙動に与える影響解析(流体機械の研究開発におけるEFD/CFD(3))

概要

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This paper details experimental studies on the flow field around 3 types of LPT (Low Pressure Turbine) airfoils with different peak load positions linear turbine. Highly loaded LPT blades are one of the key paths to successful future aero-engines. However, those blades are usually accompanied with separation bubble, especially at cruise condition, eventually leading to the increase in aerodynamic loss. The purpose of this study is to clarify the performance of aft-loaded LPT blade as well as front-loaded LPT blade through measurements of wake-affected boundary layers upon including separation bubble at low Reynolds number conditions. This paper focuses on differences of characteristics of the separate boundary layer influenced by the wake passing, through the comparison among the measurements for these airfoils.
2009-09-12