排灌机械工程学报2024，Vol.42Issue(4)：365-372,8.DOI:10.3969/j.issn.1674-8530.23.0066
仿鸮翼型风力机叶片气动弹性变形分析
Analysis of aeroelastic deformation of bionic airfoil wind turbine blades
摘要
Abstract
In order to suppress the aeroelastic deformation of wind turbine blades,a modified design of the bionic owl′s airfoil for large wind turbines was proposed.The effect of the bionic airfoil on the aeroe-lastic deformation of the blade was analyzed by the unidirectional fluid-structure coupling method,and the mechanism of the bionic airfoil suppressing the aeroelastic deformation of the blade was elaborated by modal analysis and resonance response.The results find that there is an 11.05%reduction in the aeroelastic deformation of the bionic airfoil blade compared to the model blade.The bionic airfoil makes the blade pressure surface stress distribution trend change,and makes the maximum stress value of the blade pressure surface transfer from the middle of the blade to the leading edge.The bionic airfoil makes the pressure difference between the upper and lower surface of the blade increase,and the pres-sure value of the suction surface is about twice the original,so that the blade in the flapping direction to improve the resistance to deformation.At the same time,the aerodynamic performance of the blades has been improved.The bionic airfoil pattern increases the first to sixth order intrinsic frequency of the blade,the bionic airfoil pattern causesan 89.23%reduction in the resonantdeformation of the blade in the flapping direction,and also reduces the resonant velocity and acceleration amplitude of the blade.Therefore,the bionic airfoil can effectively suppress the aeroelastic deformation of the blade,and its design method and conclusion can provide a new idea for the research of suppressing aeroelastic de-formation of large wind turbine blade.关键词
风力机叶片/气动弹性变形/仿鸮翼型/单向流固耦合/固有频率Key words
wind turbine blade/aeroelastic deformation/bionic owl′s airfoil/unidirectional fluid-structure coupling/inherent frequency分类
农业科技引用本文复制引用
陈坤,赵培尧,冯文慧,贵红亮,郝振华..仿鸮翼型风力机叶片气动弹性变形分析[J].排灌机械工程学报,2024,42(4):365-372,8.基金项目
新疆维吾尔自治区自然科学基金资助项目(2022D01C33) （2022D01C33）
新疆维吾尔自治区研究生科研创新项目(XJ2022G049) （XJ2022G049）
国家自然科学基金资助项目(51765062) （51765062）
