Multi-fidelity Analyses of Rotor Loads of Floating Offshore Wind Turbines with Wind/Wave Misalignment

Multi-fidelity Analyses of Rotor Loads of Floating Offshore Wind Turbines with Wind/Wave Misalignment
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风浪失准的浮式海上风力发电机转子载荷的多保真度分析

DOI:
10.1088/1742-6596/2265/4/042010
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发表时间:
2022
期刊:
Conference Series
影响因子:
--
通讯作者:
Ortolani A
Ortolani A
中科院分区:
--
文献类型:
--
作者:
Ortolani A

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对固定式和浮动式海上风力涡轮机的气动和水动力载荷进行可靠的预测,对于评估疲劳寿命和设计负载和功率控制系统至关重要。然而,影响空气动力学预测的重大不确定性仍然存在。采用时频域Navier-Stokes计算流体力学和叶片单元动量理论,对有、无偏航误差的固定基础和浮动风力机转子的气动载荷和功率进行了交叉对比分析。所考虑的测试案例是国家可再生能源实验室的5兆瓦基准涡轮机,假定安装在半潜式平台上的浮箱中,并在塔基周围进行俯仰运动。虽然低保真和高保真预报的总体定性一致性在所有情况下都是公平的,但对于所考虑的区域,对于对齐风中的俯仰旋翼,这两种方法之间的一致性要好于无论塔台运动如何的偏航流动。
Reliable predictions of the aero-and hydrodynamic loads of fixed-bottom and floating offshore wind turbines are paramount for assessing fatigue life and designing load and power control systems. However, significant uncertainty affecting aerodynamic predictions still exists. This study presents cross-comparative analyses of the predictions of aerodynamic loads and power of fixed-foundation and floating wind turbine rotors with and without yaw errors using time-and frequency-domain Navier-Stokes Computational Fluid Dynamics, and the Blade Element Momentum theory. The considered test case is the National Renewable Energy Laboratory 5 MW reference turbine, assumed to be mounted in the floating case on a semi-submersible platform and undergoing pitching motion about the tower base. Although the overall qualitative agreement of the low-and high-fidelity predictions is found to be fair in all cases, for the considered regimes the agreement between the two methods is better for the pitching rotor in aligned wind than for the yawed flows regardless of the tower motion.
使用全耦合低速预调节多重网格求解器对风力涡轮机湍流进行可压缩雷诺平均纳维斯托克斯分析
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使用谐波平衡和基于相关性的 γ– Reθt 转变模型进行动态失速分析,适用于风力涡轮机应用†
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