摘要
以WindPACT 1.5 MW风力机为研究对象,以厚度、锥度、倾斜角度为参数进行正交试验来设计叶尖小翼,并对叶片进行双向流固耦合计算。结果表明:添加小翼后叶片的振动频率下降,叶尖小翼最大拉应力为58.707 MPa,最大压应力为29.87 MPa,说明叶片材料能够达到强度要求,不会发生断裂;随着叶尖小翼的厚度、锥度和倾斜角度增加,拉应力和压应力随之增大;对于叶尖小翼的变形,倾斜角度影响最大,锥度其次,厚度影响最小;双向流固耦合可以得到比单向流固耦合更为精确的结果。
Taking a WindPACT 1.5 MW wind turbine as research object,blade tip winglets were designed by orthogonal test with parameters of thickness,taper and tilt angle,and bidirectional fluid-structure coupling was calculated.Results show that the vibration frequency of the blade decreases after adding winglet.The maximum tensile stress of the blade tip winglet is 58.707 MPa,and its maximum compressive stress is 29.87 MPa,which means the blade material can meet strength requirements,and will not break.As the thickness,taper and inclination angle of the tip winglet increase,the tensile stress and compressive stress increase accordingly.For the deformation of the tip winglet,the inclination angle has the greatest effect,followed by taper,and the thickness has the least effect.Bidirectional fluid-structure coupling can obtain more accurate results than one-way fluid-structure coupling method.
作者
张玲
岳旭
修栋波
ZHANG Ling;YUE Xu;XIU Dongbo(School of Energy and Power Engineering,Northeast Electric Power University,Jilin 132012,Jilin Province,China;Hanfeng Power Plant,Handan 056200,Hebei Province,China)
出处
《动力工程学报》
CAS
CSCD
北大核心
2024年第10期1558-1564,共7页
Journal of Chinese Society of Power Engineering
基金
吉林省科技厅社会发展计划项目(20200403141SF)。
关键词
风力机
叶尖小翼
双向流固耦合
优化设计
wind turbine
tip winglet
bidirectional fluid-structure coupling
optimal design
作者简介
张玲(1970-),女,山东莱阳人,教授,博士,研究方向为风力机叶片优化设计及气动特性。电话(Tel.):13944640770,E-mail:zhangling_2009@qq.com。
