【摘要】 垂直轴风力机受极端阵风影响，导致其气动性能较之稳态风显著下降。基于鸟类飞行时羽翼自适应抬落以减缓流动分离程度的特点，将自适应弹片安装于垂直轴风力机叶片吸力面尾缘，由自编译程序构建阵风模型，通过计算流体力学方法研究安装自适应弹片后，垂直轴风力机分别在稳态风与极端阵风下的气动性能。结果表明：安装自适应弹片可有效实现垂直轴风力机在极端阵风下的流动控制，能量系数与转矩系数均增加，表现为整机气动性能提升；自适应弹片通过将叶片表面流动分离区分割为多个小尺度涡，促进流体再附着以减缓流动分离程度。更多还原

【Abstract】 Vertical axis wind turbine(VAWT) suffer notable aerodynamic performance losses under extreme gusts compared to steady-state winds.Inspired by the adaptive lift of bird wings to mitigate flow separation,adaptive flaps were installed at the trailing edge of the suction side of VAWT blades.A self-developed program was used to construct a gust model,and computational fluid dynamics simulations were conducted to evaluate the aerodynamic performance under both steady and extreme gust conditions.Results show that adaptive flap effectively enhance flow control under extreme gusts,leading to increased power and torque coefficients and improved overall aerodynamic performance.The adaptive flap mitigate flow separation by dividing the separated flow region into multiple smallscale vortices,promoting flow reattachment.更多还原