前、后加载低压涡轮高升力叶型流动损失机理大涡模拟研究

Large Eddy Simulation Study of the Flow Loss Mechanism of the Pre-load and After-load Low-Pressure-Turbine high Lift Profile

高升力叶型设计是当代民机低压涡轮的重要发展方向之一。通过二维大涡模拟研究了在尾迹扫掠条件下前、后加载两套叶型的吸力面边界层流动特征和损失特性,结果表明后加载的高升力叶型在尾迹扫掠下具有更优的气动性能。

High-lift profile design is one of the important development trends for modern civil engine. The boundary flow characteristic and loss feature of the pre-load and after-load high-lift profile was simulated by Large Eddy Simulation considering the passing wake,the results shows that the after-load high-lift profile has better aerodynamic performance under the passing wakes.