华中科技大学学报（自然科学版）2025，Vol.53Issue(1)：79-85,7.DOI:10.13245/j.hust.250111
地表粗糙度影响风力机输出功率的实验研究
Experimental study on effect of surface roughness on output power of wind turbines
摘要
Abstract
Four boundary layers conforming to different wind contour indices were constructed using a combination of sharp splits and rough elements.Only the effect of different wind profiles on the wind turbine power spectrum was investigated,under the premise that the mean wind speed of the incoming flow at the hub height,the turbulence integration scale,and the wind pulsation power spectrum were satisfied to be the same.The results show that the wind turbine output power spectrum and the turbulence spectrum of the incoming flow behave as three corresponding regions in the frequency domain,which are the low-frequency region of the turbulence spectrum represented by large scale turbulent structures,the intermediate region represented by turbulent energy dissipation,the intermediate region representing turbulent energy dissipation,and the high-frequency region represented by small and microscale eddies.It is found that under different surface roughness,the wind turbine output power spectra corresponding to the intermediate region show different slopes of attenuation,and under the same surface roughness,the degree of attenuation is independent of the turbulence integral scale,wind speed and other factors,and the spectral characteristics of the two quantities show a nonlinear relationship,and the slope of the attenuation has a tendency to increase with the increase of the surface roughness.The output power of the wind turbine varies greatly under different wind profile indices,and the energy difference in the incoming flow is found to be an important reason for the variation of the output power.关键词
地表粗糙度/风力机/功率频谱/湍流频谱/风洞实验Key words
surface roughness/wind turbine/power spectrum/turbulent spectrum/wind tunnel experiment分类
能源科技引用本文复制引用
马高生,王鹏锜,李德顺,郑权..地表粗糙度影响风力机输出功率的实验研究[J].华中科技大学学报（自然科学版）,2025,53(1):79-85,7.基金项目
国家重点研发计划资助项目(2022YFB4202102-04) （2022YFB4202102-04）
中国工程院战略与资讯项目(2023-DFZD-04). （2023-DFZD-04）
