Development of Highly Efficient 3D High-Lift Turbine Airfoil by Use of Composite Flow-Control Devices

本文对二维轮廓的影响进行了实验和数值研究，随后对高升力LPT翼型后缘重塑对降低损失的影响进行了解释。在本研究中应用的二维轮廓是一种有用的被动装置，以减少叶栅损失，特别是在低雷诺数区域。然而，随着雷诺数的增加，这种装置的增益往往会损失。2. 在高雷诺数状态下，TE整形有利于降低损失，正如设计的那样，目标是尾缘下游的基区边缘。3.本文提出的新方法采用比原方法更小步长的二维轮廓，同时进行TE整形，在无来流尾迹条件下，在所有测试雷诺数条件下都大大降低了叶栅损失。

This report dealt with the experimental and numerical investigations of the effects of 2D contouring, followed by the explanation on the trailing edge reshaping on the loss reduction of a high-lift LPT airfoil.1. 2D contouring applied in this study was a useful passive device to reduce the cascade loss, especially at low Reynolds number regime. However, such a gain from the device tended to be lost as the Reynolds number increased. 2. TE Reshaping was advantageous for the loss reduction at high Reynolds number regime as designed aiming at the trim of the base region downstream of the trailing edge. 3.The proposed new method in this study, which applies 2D contouring with a smaller step than that of the original one and TE Reshaping at the same time, considerably reduced the cascade loss over the all tested Reynolds number conditions under no incoming wake condition.