基于流固耦合的风力机气动噪声影响研究  

Research on aerodynamic noise of wind turbine based on fluid-structure interaction

作　　者：郭茂丰 张立茹[2] 王占洋[2] 李得银 Guo Maofeng;Zhang Liru;Wang Zhanyang;Li Deyin(Hohhot Thermal Power Plant,Northern United Electric Power Co.,Ltd.,Hohhot 010030,China;School of Energy and Power Engineering,Inner Mongolia University of Technology,Hohhot 010051,China)

机构地区：[1]北方联合电力有限责任公司呼和浩特热电厂,内蒙古呼和浩特010030 [2]内蒙古工业大学能源与动力工程学院,内蒙古呼和浩特010051

出　　处：《可再生能源》2018年第8期1238-1243,共6页Renewable Energy Resources

基　　金：国家自然科学基金项目(51666014)

摘　　要：考虑风力机叶片与空气的流固耦合作用,基于ANSYS workbench工作平台,采用双向流固耦合的方法,模拟预测风力机的气动噪声,并与额定工况下的实验数据对比。结果发现:耦合作用下风力机气动噪声增大,且耦合模拟得到的气动噪声声压级与实验值更为接近,证明计算模型的准确性;风轮后的辐射声最大声压级在叶片径向0.57R^0.71R位置,风力机叶片与空气的流固耦合作用,增大了辐射声的声压级,而对于辐射声的传播规律影响很小;耦合作用下随尖速比的增加,相同位置气动噪声的声压级呈现缓慢增大的趋势,不同尖速比下气动噪声的声压级随轴向距离的增加变化规律大致相同,均呈不断减小的趋势。Considering the fluid-structure interaction effect of wind turbine blade with air, based on ANSYS workbench working platform, the two-way fluid-structure interaction method was used to simulate and forecast aerodynamic noise of wind turbine compared with the experimental data under the rated conditions. The results show that the aerodynamic noise of the wind turbine increases with the interaction effect, and the aerodynamic noise level is closer to the experimental value, which proves the accuracy of the calculation model. The maximum sound pressure level of the radiant sound after the wind turbine is in the radial direction of the wind wheel 0.57 R ~0.71 R,the fluid-solid interaction of the wind turbine blade and the air increases the sound pressure level of the radiated sound, the influence of the propagation law of radiation is very small. Under the interaction effect, the sound pressure level of the aerodynamic noise in the same position shows a slow increasing trend with the increase of tip speed ratio, the sound pressure level of the aerodynamic noise under different tip speed ratios are roughly the same as the increase of the axial distance,and both show a decreasing trend.

关 键 词：水平轴风力机 流固耦合 气动噪声 声压级 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]