风力机翼型多目标气动性能优选设计方法
首发时间:2012-06-14
摘要:本文以翼型升阻比和气动噪声作为翼型主要优选目标,建立风力机翼型的多目标优选设计方法,包括利用Bezier曲线对翼型几何进行参数化建模,使用位势流动与边界层迭代(IBL)的流动分析方法计算翼型流场,采用Brooks-Pope-Marcolini翼型自噪声半经验模型预测气动噪声,利用均匀实验优选方法求得优选翼型。以S809翼型为例,对翼型进行优选设计计算,结果表明优选翼型在设计工况下,升阻比提高,噪声降低,优选翼型获得比原始翼型更好的气动性能。
关键词: 可再生能源 风力机翼型 升阻比 气动噪声 优选设计
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Multi-objective optimization Design Method of Aerodynamic Performanc for Wind Turbine Airfoil
Abstract:In this paper, Aerodynamic performance and aerodynamic noise of the airfoil at the same time as the optimization objective, the multi-objective optimization method of wind turbine airfoil is established, including the use of Bezier curves for describing airfoil geometry, the use of iterative potential flow and boundary layer (IBL) flow analysis side of airfoil flow field calculation, using the Brooks-Pope-Marcolini airfoil self-noise semi-empirical model to predict aerodynamic noise, using uniform design optimization method to get optimized airfoil. By taking S809 airfoil as the original airfoil and applying the developed program. The results show that the lift-drag ratio of optimized airfoil is increased and the acoustic level is decreased in operating conditions, optimized airfoil get much better aerodynamic performance and acoustic performance than the original airfoil.
Keywords: renewable energy airfoil Aerodynamic performance Optimum design Aerodynamic noise
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