摘要
利用profili软件和solid works建立2.5 MW风力机风轮三维模型,并将三维模型导入CFX中进行模型的流固耦合下流场风轮和叶片变形分析,得到流场域风轮表面压力和叶片表面压力载荷变化的有限元分析结果。结果表明:风轮表面压力迎风面大于背风面,形成压力差使得风轮旋转,背风面压力最大值出现在叶片上边缘区域。额定风速下叶片表面压力非线性分布,中间区域压力值最大,靠近叶片前缘区叶片震荡越大。额定风速和转速下叶片表面压力出现类似线性分布,叶尖到叶根呈现梯度分布状态,最大压力出现在叶尖部位。
The 3D model of 2.5MW wind turbine wind wheel is built by profili software and solid works,and the 3D model is introduced into CFX to analyze the flow field wind wheel and blade deformation under the fluid-solid coupling model,and the surface pressure and blade of the wind field are obtained.Finite element analysis results of surface pressure load changes.The results show that the windward surface of the wind wheel is larger than the leeward surface,and the pressure difference is formed to make the wind wheel rotate.The maximum pressure of the leeward surface appears in the upper edge area of the blade.At the rated wind speed,the surface pressure of the blade is nonlinearly distributed,and the pressure value in the middle region is the largest,and the blade oscillates near the leading edge of the blade.At the rated wind speed and speed,the surface pressure of the blade showed a similar linear distribution,and the tip to the leaf root showed a gradient distribution state,and the maximum pressure appeared at the tip of the blade.
作者
张志阳
魏敏
胡蓉
张立新
李辉
施宁强
ZHANG Zhiyang;WEI Min;HU Rong;ZHANG Lixin;LI Hui;SHI Ningqiang(School of Mechanical and Electrical Engineering,Shihezi University,Shihezi Xinjiang 832000,China;School of Mechanical Engineering,Chongqing University,Chongqing 400044,China)
出处
《机械设计与研究》
CSCD
北大核心
2020年第2期185-188,共4页
Machine Design And Research
基金
国家自然科学基金资助项目(51675354)。
关键词
风轮
叶片
表面压力
流固耦合
线性分布
wind wheel
blade
surface pressure
fluid-solid coupling
linear distribution
