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基于SSTk-ω湍流模型对垂直轴风力机(VAWT)风轮进行二维数值模拟,提出了一种通过副翼摆动改善风轮旋转流场的反函数控制策略,并对风轮流场和涡量进行分析,比较了原始状态和添加反函数控制策略情况下的力矩系数.结果表明:该控制策略能够很好地使风力机叶片完全处于临界静态失速攻角内,翼型尾缘处大尺度涡减弱,整个流域内翼型对应的涡量分布图较未施加反函数控制策略的涡量分布图更均匀,改善了风力机的气动性能;运用反函数控制策略能降低力矩系数的振幅.
Based on the SSTk-ω turbulence model, a two-dimensional numerical simulation of a rotor of a vertical axis wind turbine (VAWT) is proposed. An inverse function control strategy is proposed to improve the rotating flow field of the rotor by aileron oscillation. The results show that this control strategy can make the blade of the wind turbine completely within the critical static stall angle of attack and the large scale vortex at the trailing edge of the airfoil And the vorticity distribution map corresponding to the airfoil in the whole catchment is more uniform than the vorticity map without the inverse function control strategy, which improves the aerodynamic performance of the wind turbine. The inverse function control strategy can reduce the amplitude of the torque coefficient.