|
| 波形前缘结构对风力机气动噪声特性的影响 |
| Influence of wavy leading-edge structure on aerodynamic noise characteristics of wind turbines |
| 投稿时间：2023-04-04 |
| DOI：10.13259/j.cnki.eri.2025.04.006 |
| 中文关键词: 波形前缘 声压级 噪声辐射特性 风力机 |
| 英文关键词:wavy leading edge sound pressure level noise radiation characteristics wind turbine |
| 基金项目: |
|
| 摘要点击次数: 661 |
| 全文下载次数: 549 |
| 中文摘要: |
| 为探究具有仿座头鲸鳍肢前缘凸起结构的风力机叶片的气动噪声特性，采用大涡模拟以及声类比方法对风力机进行数值模拟。结果表明：额定风速下，波形前缘结构可以在不同叶尖速比下提高风力机的功率系数，最大可提高约12%；随着频率的增加，原始风力机与仿生风力机的声压级在各监测点均呈降低趋势，且仿生风力机在各监测点的声压级均小于原始风力机的值，降低约0.1～4.5 dB，最大降噪量约可达6.5%。波形前缘结构加快了涡脱落的频率和尾迹处涡团的耗散速度，使得具有波形前缘结构的风力机叶片的气动噪声低于原始风力机叶片。 |
| 英文摘要: |
| To investigate the aerodynamic noise characteristics of wind turbine blades featuring leading-edge tubercles inspired by humpback whale flippers, a numerical simulation of the wind turbine was conducted using large eddy simulation and acoustic analogy methods. The results show that under rated wind speed conditions, the wavy leading-edge structure increases the wind turbine's power coefficient across various tip-speed ratios, with a maximum improvement of approximately 12%. As frequency increases, the sound pressure levels of both the original and the bionic wind turbines decrease at all monitoring points, with the bionic turbine consistently exhibiting lower sound pressure levels than the original one. The reduction ranges from about 0.1 to 4.5 dB, corresponding to a maximum noise reduction rate of around 6.5%. The wavy leading-edge structure accelerates the vortex shedding frequency and the dissipation rate of vortex clusters in the wake, resulting in lower aerodynamic noise for the wind turbine blade with the wavy leading-edge structure compared to the original design. |
| HTML 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
