直线翼垂直轴风力机气动特性的数值分析  

Numerical Analysis of Aerodynamic Characteristics on Straight-Bladed Vertical Axis Wind Turbine

作　　者：周晖钰 郭志平[1] 张艳锋 宋晓文[1] ZHOU Hui-yu;GUO Zhi-ping;ZHANG Yan-feng;SONG Xiao-wen(College of Mechanical Engineering,Inner Mongolia University of Technology,Hohhotlnner Mongolia 010051,China;College of Science,Inner Mongolia University of Technology,Hohhotlnner Mongolia 010051,China)

机构地区：[1]内蒙古工业大学机械工程学院,内蒙古呼和浩特010051 [2]内蒙古工业大学理学院,内蒙古呼和浩特010051

出　　处：《计算机仿真》2022年第12期137-142,共6页Computer Simulation

基　　金：国家自然科学基金项目(51765050)。

摘　　要：以采用NACA0021翼型的三叶片直线翼垂直轴风力机为研究对象,利用CFD数值模拟技术研究不同尖速比对直线翼垂直轴风力气动特性的影响。数值模拟采用滑移网格技术,选择k-ωSST湍流模型和SAMPLE迭代算法进行数值计算。数值模拟结果表明,叶片表面上下压差在叶片前缘处最大,并沿着弦线方向逐渐减小,在尾缘处趋于0;叶片表面所受气动力在上流域达到最大,且随着尖速比的增加,叶片上下表面压差变小;增加尖速比可以抑制叶片表面的气流分离;实验对象风力机最佳尖速比λ=1.8。Taking the three bladesstraight-bladed vertical axis wind turbine with NACA0021 airfoil as the research object, the CFD numerical simulation technology was used to study the influence of different tip speed ratios on the aerodynamic characteristics of a straight-bladed vertical axis wind turbine. The numerical simulation used sliding grid technologywith k-ω SST turbulence model and SAMPLE iterative algorithm for numerical calculation. Numerical simulation results show that the upper and lower pressure difference on the blade surface is the largest at the leading edge of the blade;It gradually decreases along the chord line and tends to 0 at the trailing edge;The aerodynamic force on the blade surface reaches the maximum in the upstream;As the tip speed ratio increases, the pressure difference between the upper and lower surfaces of the blade becomes smaller. In addition, increasing the tip speed ratio can restrain the airflow separation from the blade surface. The Optimal tip speed ratio of the experimental object wind turbine is λ=1.8.

关 键 词：直线翼垂直轴风力机 尖速比 气动特性 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] TK83[自动化与计算机技术—计算机科学与技术]