Wind turbine aerodynamic load and response prediction based on vortex wake method
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摘要: 采用涡尾迹方法计算准定常气动性能，结合Leishman-Beddoes动态失速模型计算叶片的非定常气动力。应用有限元分析软件，分析风力机在不同转速下的风轮模态，塔架的前后、左右振动模态。基于非定常气动力和结构振动模态，针对风力机风轮，建立其结构运动方程。求解出的叶片振动速度加入到非定常气动力的计算中，从而建立了考虑叶片振动的风力机载荷、响应计算模型。分析了Phase VI叶片和某1.5MW风力机各个叶片截面的气动力、振动位移和振动速度随时间的响应曲线，表明该方法能够较好地计算出风力机的气动性能、载荷和响应。Abstract: Abstract The vortex wake method is used to predict the quasisteady aerodynamic forces, which are subsequently input to the LeishmanBeddoes dynamic model to calculate the unsteady aerodynamic forces. The structural dynamic equations are obtained for wind turbine rotor. The modal analysis of wind turbine rotor is calculated based on blades flapwise stiffness, edgewise stiffness, and mass properties of hub and tower structure using FEM approach. The wind turbine aerodynamic forces and response calculation model is constructed by adding the contribution of blade vibration speeds to unsteady aerodynamic forces. The timeresponses of aerodynamic forces, vibration deflection and vibration speed are calculated both for the NREL Phase VI turbine and for a 1.5 MW wind turbine, showing certain useful results and conclusion with analysis in detail to some extent.
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Keywords:
- wind turbine /
- prescribed vortex wake method /
- dynamic stall /
- modal shape
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[1] ［1］HUYER S A D,SIMMS D,ROBINSON M C. Unsteady aerodynamics associated with a horizontalaxis wind turbine［J］.AIAA Journal,1996，34(7)：1410-1419.
［2］SHIPLEY D E,MILLER M S, ROBINSON M C. Dynamic stall occurrence on a horizontalaxis wind turbine［A］．Wind Energy 1995Proc. Energy Source Technology Conf.［C］.Houston TX,USA:ASME Solar Energy Division,1995,16,167-173.
［3］WANG T，COTON F N．Prediction of the unsteady aerodynamic characteristics of horizontal axis wind turbines including three dimensional effects［J］．Journal of Power and Energy，2000，214(5)：385-400.
［4］伍燕，王同光.风力机叶片的三维非定常气动特性估算［J］.计算力学学报,2008,25（1）：100-103.
［5］李德源，叶枝全，包能胜，陈严.风力机旋转风轮振动模态分析［J］.太阳能学报,2009,30(2):222-225.
［6］汪建文，赵志渊，刘博.三叶片风轮动力学特性的分析［J］.太阳能学报,2008,26(4):90-92.
［7］LEISHMAN J G,BEDDOES T S.A semiempirical model for dynamic stall［J］.Journal of the American Helicopter Society,1989,34(3):3-17.
［8］刘雄，张宪民，陈严，叶枝全.基于BEDDOES_LEISHMAN动态失速模型的水平轴风力机动态气动载荷计算方法［J］.太阳能学报,2008,29(12):1449-1455.
［9］HAND M M，SIMMS D A，FINGERSH L J，et a1．Unsteady aerodynamics experiment phase VI： wind tunnel test configurations and available data campaigns［R］．NREUTP-500-29955，2001．
［10］Last og sikkerhed for vindmollekonstruktioner［R］. DAN-SK-STANDARD DS-472,in Danish.
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