基于环量场影响的Magnus风力机组合旋转圆型翼设计与研究

DESIGN AND STUDY OF COMBINED ROTATING CYLINDER AIRFOIL OF Magnus WIND TURBINE UNDER INFLUNCE OF CIRCLULATION FIELD

提出一种新型的面向Magnus风力机的组合旋转圆型(combined rotating cylinder,CRC)翼型设计思想,理论分析该翼型提高升力的作用机理;采用数值模拟计算方法研究该翼型的气动性能,将该翼型的数值模拟结果与传统翼型的试验结果作对比分析。结果表明:由于圆柱翼旋转产生的环量使得整个新型风力机翼型的环量得到较大提高,导致CRC翼型在马格努斯效应下产生的升力得到较大提高。表现为在整个攻角范围内的CRC翼型升力系数均远大于传统翼型,尤其是在低攻角范围内其升力系数约为传统翼型最大值的3倍,表明该翼型具有良好的价值。

A novel design concept of Combined Rotating Cylinder （CRC） airfoil used for Magnus wind turbine was presented, and the principle to raise the lift force of CRC airfoil was theoretically analyzed. The aerodynamic performance of CRC was studied by using numerical simulation method. By comparing the numerical simulation results of CRC airfoil with the testing results of the traditional one, it was found that because the circulation caused by the rotation of the cylindrical airfoil greatly improved the circulation of the CRC airfoil, the lift force of the CRC airfoil was improved greatly under the Magnus effect. Its lift coefficients at all Angle of Attack （AoAs） were far greater than the traditional one, and especially its lift coefficient reached almost 3 times of traditional one＇ s maximum values at the low AOAs. This shows that the proposed CRC airfoil has good theoretical and practical value.