中国电机工程学报2018，Vol.38Issue(9)：2649-2656,8.DOI:10.13334/j.0258-8013.pcsee.171139
高尖速比下风力机塔影效应及叶片载荷特性研究
Research on Wind Turbine With/Without Tower and Load Characteristic of Blade at High Tip-speed Ratio
摘要
Abstract
Basing on the dynamic grids, the unsteady tower shadow effect of NREL Phase VI wind turbine was studied with N-S equation as the governing equation, dual-time as the solution and SA model as the turbulence model. The feasibility of unsteady methods employing dynamic crossed-grid and dynamic patched-grid were verified by calculation, comparison and analysis. Furthermore, impact assessment with/without tower is as follows: pressure distributions on blade with and without tower are both approximate to experimental data. the leading edge of blade at 90° azimuthal angle with tower will have a lower suction peak than that at 270° azimuthal angle. Blade at 270° azimuthal angle with tower will have a simpler flow field structure while blade at 90° azimuthal angle will be interfered obviously by the flow near tower. Meanwhile, there are two kinds of fluctuations that load pit and slight load fluctuation for single period blade's thrust and torque curve with azimuthal angle changes, and the load pit is caused by the wind turbine tower, and the slight load fluctuation is caused by the flow separation at the root of blade. The study of blade load changes has certain value for dynamic load design of wind turbine blade.关键词
风力机/塔影效应/动态载荷/数值模拟/非定常/动态拼接网格/刚性运动网格Key words
wind turbine/tower shadow effect/dynamic load/numerical simulation/unsteady/dynamic crossed-grid/dynamic patched-grid分类
能源科技引用本文复制引用
杨小川,孟德虹,王运涛,孙岩,李伟..高尖速比下风力机塔影效应及叶片载荷特性研究[J].中国电机工程学报,2018,38(9):2649-2656,8.基金项目
国家重点基础研究发展计划项目(2016YFB0200700).The Project Supported by National Basic Research Program of China (2016YFB0200700). （2016YFB0200700）
