流体机械

2011, v.39;No.473(11) 32-37+44

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水平轴风力机叶片表面积灰厚度对三维气动特性影响的数值模拟
Numerical Simulation of the Effect of Dust Thickness on Three-dimensional Aerodynamic Performance of HAWT

吴小飞;唐胜利;周文平;
WU Xiao-fei,TANG Sheng-li,ZHOU Wen-ping(Chongqing University,Chongqing 40030,China)

摘要(Abstract):

采用数值模拟方法分析了叶片表面积灰厚度对风力机三维气动特性的影响。首先,采用CFD软件包FINETM-TURBO建立风力机的三维模型,模拟叶片表面光滑的情况下风力机的三维气动特性,并与文献实验数据进行比较,验证了该模型的有效性。然后模拟了积灰厚度变化对风力机三维气动特性的影响,得到了不同积灰厚度下叶片的压力分布、速度分布的变化。结果表明,叶片表面积灰厚度对风力机叶片气动特性有较大影响:随着积灰厚度的增加,叶片两侧大部分区域风速减小,气流运动无规律性增强,压力面与吸力面压差减小,风力机效率降低。
Numerical investigations on the effect of blade surface dust thickness,on the three-dimensional aerodynamic performance was performed.Fisrtly,the establishment of a three-dimensional model of the wind turbine based on a horizontal wind turbine and simulated the three-dimensional aerodynamic performance of the wind turbine based on smooth surfaces of blades and compared with the experimental data to verify the validity of the model.Then,simulated the effect of different dust thickness according to the actual operating situation of the three-dimensional aerodynamic performance and calculated the pressure and velocity distribution according different dust thickness.The results showed that dust thickness had great effect on the three-dimensional aerodynamic performance of wind turbine.With the dust thickness increasing,the wind speed on both sides of blades reducted obviously,the irregular of air flow increased,the pressure difference between the preesure side and suction side decreased and the efficiency of wind turbine decreased accordingly.

关键词(KeyWords): 风力机;数值模拟;三维气动特性;积灰厚度
wind turbine;numerical simulation;three-dimensional aerodynamic performance;dust thickness

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基金项目(Foundation): 重庆市科委自然基金资助项目(CSTC,2006BA3023)

作者(Author): 吴小飞;唐胜利;周文平;
WU Xiao-fei,TANG Sheng-li,ZHOU Wen-ping(Chongqing University,Chongqing 40030,China)

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