Employing large Horizontal Axis Wind Turbines, HAWTs, is inevitable for increasing the wind power generation per turbine unit, i.e. reducing the cost of wind energy production. The consequences of large HWATs application are considerable aeroelastic blade deformation and high levels of aeroacoustic noise generation. In this paper, considering the aeroelastic effects, aeroacoustic calculation of a MW class HAWT is performed by implementing a transient two-way partitioned Fluid-Solid Interaction (FSI) technique. The CFD-FEM and structural modeling are validated using AOC 50/15 HAWT experimental data. Aerodynamic and aeroacoustic simulations of WP_Baseline 1.5 ​MW HAWT are conducted. The results show the power amount and the noise level generated by the flexible blades are about 2.7% and 0.74 ​dB less than those generated by the rigid blades.

使用大型水平轴风力涡轮机（HAWT）不可避免地增加了每个涡轮机单元的风力发电量，即降低了风能生产成本。大量HWAT的应用后果是相当大的气弹叶片变形和高水平的气声噪声产生。在本文中，考虑到空气弹性效应，通过实施瞬态双向流固耦合（FSI）技术来进行MW级HAWT的空气声学计算。使用AOC 50/15 HAWT实验数据验证了CFD-FEM和结构建模。进行了WP_Baseline 1.5 MW HAWT的空气动力学和空气声学模拟。结果表明，柔性刀片产生的功率量和噪声水平比刚性刀片产生的功率量和噪声水平分别低约2.7％和0.74 dB。