反转叶轮风力机非定常尾流对下游环境的影响

Effect of Unsteady Wake from Counter-Rotating Wind Rotor on Downstream Environment

针对传统单转轮风力机设计,研发了用于减小湍流尾流影响、抗台风的新型两级双转轮风力发电机组,探讨了风力机非定常尾流对下游环境的影响,并设定了一个包括地面境界层在内的大空间计算域进行离散数值解析。研究结果表明,两转轮在不同转动位置时压力分布呈规律性动态变化,湍流影响比传统单轮小,动力特性好。

Against the design of traditional single rotor,this paper develops a counter-rotating tandem-rotor wind turbine,which is devoted as the wind turbine under the expectation of less turbulent wake and anti-typhoon.It also investigates the effect of the unsteady wake flow from a wind turbine on the downstream environment under the wide space of computational domain including the ground surface.The result reveals that the pressure distribution in the wake varies regularly with the variation of phase in two rotors,and the turbulent effect of wake is less than the single rotor with the better dynamic characteristics.