航空エンジン用低圧タービン翼面上に発生する剥離泡の非定常挙動に関する研究 : LES解析と実験(エネルギー変換・流体機械,一般講演)

概要

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This paper deals with LES-based CFD studies on the flow field around a highly loaded low-pressure turbine blade, comparing some of the CFD results with the relevant experimental data. The purpose of this study is to clarify the effect of incoming wakes upon the aerodynamic loss of the turbine blade, through the numerical investigation of wake-affected boundary layers including separation bubble for low Reynolds number conditions and/or low solidity conditions. Cylindrical bars are used to emulate upstream stator wakes that impact the rotor blade. Despite some discrepancy between the numerical results and the experiment, it turns out that the LES-based analyses successfully captures the behaviors of the separated boundary layer subjected to the periodic wake passing.
日本流体力学会の論文
2007-08-06