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首页> 外文会议>American Helicopter Society International annual forum >GENETIC ALGORITHM BASED AERODYNAMIC SHAPE OPTIMIZATION TOOL FOR WIND TURBINE BLADES AND ITS IMPLEMENTATION TO HELICOPTER BLADES
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GENETIC ALGORITHM BASED AERODYNAMIC SHAPE OPTIMIZATION TOOL FOR WIND TURBINE BLADES AND ITS IMPLEMENTATION TO HELICOPTER BLADES

机译：基于遗传算法的风轮机叶片气动形状优化工具及其对直升机叶片的实现

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This study presents a methodology first built up for the aerodynamic shape optimization for wind turbine rotors and its modified version for a helicopter rotor in hover. The Genetic Algorithm (GA) coupled with an in-house Blade Element Momentum (BEM) tool is used in the design optimization process. The wind turbine blade optimization studies are performed for maximizing the power production at a given wind speed, rotor speed and rotor diameter, while for the helicopter blade optimization in hover, figure of merit is considered. The airfoil profiles along the span are defined by high order Bezier curves, and the control points of the curves are taken as the design variables. The chord length distribution and the twist distribution are also defined by Bezier splines. The sectional aerodynamic loads needed by the BEM method are obtained by using the potential flow solver with a boundary layer model, XFOIL. The BEM calculations for each individual in the GA population may be computed in parallel using OpenMPI. The BEM tool developed is validated with the available wind turbine and helicopter blade aerodynamic data and then design optimization studies are successfully performed.
机译：这项研究提出了一种最先建立用于风轮机转子的空气动力学形状优化的方法，以及一种用于悬停的直升机旋翼的改进版本的方法。在设计优化过程中使用了遗传算法（GA）和内部刀片元素动量（BEM）工具。进行了风力涡轮机叶片优化研究，以在给定的风速，转子速度和转子直径下最大化发电量，而对于悬停时的直升机叶片优化，则考虑了品质因数。沿翼展的翼型轮廓由高阶贝塞尔曲线定义，并将曲线的控制点作为设计变量。弦长分布和扭曲分布也由Bezier样条曲线定义。通过使用带有边界层模型XFOIL的势流求解器，可以获取BEM方法所需的截面空气动力载荷。可以使用OpenMPI并行计算GA群体中每个个体的BEM计算。开发的BEM工具已通过可用的风力涡轮机和直升机叶片的空气动力学数据进行了验证，然后成功进行了设计优化研究。

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