中文摘要：

为了合理的布置风力机,尽量减小风力机尾流的影响,提高风电场的效率,同时为大型风力机的尾流场研究提供参考依据.利用轴流式风机提供来流风速,使用压差式精密风速仪和手持风速仪对两台串列风力机的尾流场进行实验研究,获得尾流区域的速度场、压力场及诱导速度场的分布规律.结果表明,上风向风力机的尾流对下风向风力机的功率有很大的影响,随着串列间距的增大,影响逐渐减小.对于无下风向风力机时,在同一测量断面处的风速随着半径的增大而逐渐减小.而在不同测量断面处,随着测量间距的增大,速度也逐渐减小.对于有下风向风力机时,在同一测量断面处的风速随着测量半径的增大先增大后逐渐减小.对于不同测量断面,随着测量间距和串列间距的增大,在同一角度的速度的变化趋势逐渐减缓.通过尾流的诱导速度曲线可以发现,在同一测量断面处的诱导速度随测量半径的增大呈下降趋势.而对于不同截面,同一角度的诱导速度曲线会相互交叉.

英文摘要：

In order to dispose the wind turbines reasonably to minimize the influence of wake on the wind turbine,improve the efficiency of wind farms,and meanwhile,provide a reference basis for investigation of flow field of large wind turbine wake,experimental investigation of wake behind two tandem wind turbines is conducted,where axial blower fan,precision manometric anemometer,and portable anemometer are used to get the wind and test the distribution of velocity field,pressure field,and induced velocity field in the wake of wind turbine.The result shows that the wake of the front wind turbine has agreat influence on the power of the rear wind turbine,but the influence reduces gradually with the increase of tandem spacing.When there is no rear wind turbine,the speed in the same measuring section will decrease gradually with the increase of radius.In different measuring section,the speeds will reduce gradually with the increase of measuring distance.When there is rear wind turbine,the speed in the same measuring section will increase first and then decrease gradually.In different measurement section,the speed at same angular position will gradually slow down with the increase of measuring distance and tandem spacing.The induced velocity in the same measuring section will decrease with the increase of the radius.But at the same angular position,the induced velocity curves in the different measuring section will intersect with each other.