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为有效利用风力资源和土地资源,使风力机间的尾流影响降到最低,采用Fluent 6.3软件,对不同排列情况下固定距离的两台风力机进行了数值模拟,通过比较单机风力机及不同角度布置下两台风力机的输出功率和流场分布,对风力机间相互影响造成的功率损失进行了分析.结果表明:运行中的风力机相互之间存在尾流互扰现象,导致下风向风力机功率损失;串列布置时,下风向风力机叶轮对上风向转子的发散状尾流具有收敛作用,由于受其尾流影响,功率明显降低;随着风向发生变化,下风向风力机移出上风向风力机转子尾流阴影,其功率逐渐增加,所以机组间距离须与当地盛行风向变化范围成正比.
In order to effectively use the wind resources and land resources to minimize the wake influence between the wind turbines, the Fluent 6.3 software is used to simulate two wind turbines with fixed distances in different arrangement situations. By comparing the wind turbines with different wind turbines, The output power and flow field distribution of the two wind turbines under the angle arrangement are analyzed, and the power loss caused by the mutual influence between the wind turbines is analyzed. The results show that the wind turbines in operation have wake turbulence among each other, When tandem arrangement, the downwind wind turbine impeller has a convergence effect on the divergent wake of the upwind rotor. Due to the influence of the wake, the power is significantly reduced. As the wind direction changes, the downwind wind turbine moves out Upwind wind turbine rotor wake shadow, its power gradually increased, so the distance between the crew and the prevailing wind direction is proportional to the range.