动态来流条件下,水平轴风力机的功率输出可增加30%～50%.本文通过量纲分析,确定影响水平轴风力机翼型动态来流条件下气动特性的主要参数为特征频率fr和雷诺数Re.运用CFD方法对NREL S825翼型在不同fr数和Re数条件下,进行了气动特性的对比.结果表明在动态来流条件下,低Re数对翼型特性影响较小,而fr数是影响翼型性能的关键.
参考文献
| [1] | Hansen A C;Butterfield C P .Aerodynamics of Horizontal-Axis Wind Turbines[J].Annual Review of Fluid Mechanics,1993,25:115-149. |
| [2] | Snel H;Scheper J G.Engineering Models for Dynamic Inflow Phenomena[A].Amsterdam:Elsevier,1991:390-396. |
| [3] | Gaonkar G H;Peters D A .Effectiveness of Current Dynamic-Inflow Models in Hover and Forward Flight[J].Journal of the American Helicopter Society,1986,31(02):47-57. |
| [4] | Ken Chaney;Alfred J. Eggers Jr.;Patrick J. Moriarty;William E. Holley .Skewed Wake Induction Effects on Thrust Distribution on Small Wind Turbine Rotors[J].Journal of Solar Energy Engineering,2001(4):290-295. |
| [5] | 袁新;徐利军;叶枝全 等.水平轴风力机翼型大攻角分离流动的数值模拟[J].太阳能学报,1997,18(11):35-40. |
| [6] | Jin Yan;Yuan Xin .Numerical Study of Unsteady Viscous Flow Past Oscillating Airfoil[J].Wind Engineering,2001,25(04):227-236. |
| [7] | 陈旭,郝辉,田杰,杜朝辉.水平轴风力机翼型动态失速特性的数值研究[J].太阳能学报,2003(06):735-740. |
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