摘要
基于修正的叶素动量理论提出了一种适应于水平轴风力机叶片的静气弹性分析方法;运用该方法对不同稳态风速下的叶片变形曲线进行研究,揭示了叶片预弯设计的机理,并给出了一种预弯型线的设计方法.通过对预弯和非预弯两种叶片在相同风速下的静气弹性变形和气动功率的对比和分析表明,预弯叶片的气动性能受轴向变形、扭转变形和叶片截面形状变化三个方面的影响,叶片弹性扭转变形使叶片实际气动功率偏离设计值.该研究为预弯叶片的设计提供了理论依据和方法.
A new static aeroelastic analysis method for the HAWT was proposed based on the modified blade element momentum （BEM） theory. The deformation curves of the blade under different steady wind speeds were analyzed. The prebending design principles and a profile design method were developed. The static aeroelastic analyzing result of the prebending and unprebending blade shows that, the aerodynamic performance is influenced by the cross section shape change, blade axial and torsional deformation. The prebending blade＇ s actual power has certain decrease because of the blade torsional deformation. This study provides theoretical basis and design method for the blade.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2016年第6期851-855,共5页
Journal of Northeastern University(Natural Science)
基金
国家高技术研究发展计划项目(2012AA051301)
国家自然科学基金资助项目(51175526)
关键词
风力机
预弯叶片
静气弹性
预弯机理
预弯型线设计
wind turbine
pre-bending blade
static aeroelastic
pre-bending mechanism
pre-bending profile design
