风力机塔架对尾迹特性影响的实验研究  

Experimental Investigation on the Influence of Wind Turbine Tower on Wake Characteristics

作　　者：金凯宁 韩玉霞[1] 杨斌 朱长海 Jin Kaining;Han Yuxia;Yang Bin;Zhu Changhai(School of Energy and Power Engineering,Inner Mongolia University of Technology,Hohhot,China)

机构地区：[1]内蒙古工业大学能源与动力工程学院,内蒙古呼和浩特

出　　处：《科学技术创新》2023年第5期212-216,共5页Scientific and Technological Innovation

基　　金：内蒙古自然科学基金资助项目(2020MS05026);内蒙古工业大学博士基金(BS2020033)。

摘　　要：通过PIV(Particle Image Velocimetry,粒子图象测速)技术对风力机下游2.5倍风轮直径范围内的轮毂上、下方尾迹进行测量,分析了不同来流条件下风力机尾迹湍流强度与湍动能。研究发现:塔架对后方尾迹湍流强度的影响相较于来流风速与尖速比的变化更为显著。塔架扰乱了后方尾迹结构,具有一定的掺混作用。风速升高、尖速比降低都会一定程度上促进塔架后方附着涡区湍流强度的恢复。PIV(Particle Image Velocimetry)technology was used to measure the wake above and below the hub within 2.5D downstream of the wind turbine.It is observed that the the influence of the tower on the wake is more significant than the change of incoming wind speed and tip speed ratio.The tower disturbs the rear wake structure and has mixing effect.Moreover,the increase of wind speed and the decrease of tip ratio will promote the recovery of turbulence intensity in the bound vortex area behind the tower.

关 键 词：水平轴风力机 塔架 尾迹特性 风洞实验 

分 类 号：TK89[动力工程及工程热物理—流体机械及工程]