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Numerical investigation of vortex dynamics in an H-rotor vertical axis wind turbine

机译：H转子垂直轴风力机中涡流动力学的数值研究

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We study the vortex dynamics of a two-dimensional H-rotor wind turbine using a Navier-Stokes solver. The turbulence model with the wall function is used as the turbulence closure. A sliding mesh technique is employed to handle the blade rotation. The vortex-blade interaction is systematically investigated and its influence on the force generation is discussed. Our simulations show that the vortex-blade interaction largely depends on the solidity and tip speed ratio. We further study the impact of solidity on the turbine performance. Our simulations show that the peak torque per blade decreases with the solidity while the peak torque azimuthal angle increases with the solidity. Our simulations also show that the increase in the azimuthal angle is more significant at low tip speed ratios than at high tip speed ratios. The impact of blade thickness is studied. Our simulations show that a thicker airfoil has a higher torque coefficient than a thinner airfoil. However, because for the thinner airfoil its peak ...
机译：我们使用Navier-Stokes求解器研究了二维H转子风力涡轮机的涡旋动力学。具有壁函数的湍流模型用作湍流封闭。滑动网格技术用于处理叶片旋转。系统研究了涡旋叶片相互作用，并讨论了其对力产生的影响。我们的模拟表明，涡旋叶片相互作用主要取决于固体和叶尖速度比。我们进一步研究了坚固性对涡轮性能的影响。我们的仿真表明，每片叶片的峰值扭矩随强度而降低，而峰值扭矩方位角随强度而增加。我们的仿真还表明，在低速比时，方位角的增加比在高速比时更显着。研究了叶片厚度的影响。我们的仿真表明，较厚的机翼比较薄的机翼具有更高的扭矩系数。但是，因为对于更薄的机翼，其峰值...

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