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首页> 外文会议>ASME international conference on ocean, offshore and arctic engineering >Study on Influence of Vortex Induced Loads on the Motion of Spar-Type Wind Turbine Based on Aero-Hydro-Vortex-Mooring Coupled Model
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Study on Influence of Vortex Induced Loads on the Motion of Spar-Type Wind Turbine Based on Aero-Hydro-Vortex-Mooring Coupled Model

机译：基于航空-水-涡-系泊耦合模型的涡激载荷对翼梁式风力发电机运动的影响研究

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摘要

The coupled nonlinear motion and the influence of vortex induced loads on the motion of Spar type FOWT is studied based on the aero-hydro-vortex-mooring coupled model. The first order and second order difference-frequency wave loads are calculated based on 3D potential theory; the aerodynamic loads on the rotor are calculated based on blade element momentum theory; the vortex induced loads are simulated with CFD approach; the mooring forces are solved by the catenary theory and the nonlinearity of restoring forces are also considered. The nonlinear coupled model is set up and a numerical code is developed for solving the motion of OC3-Hywind Spar-type FOWT in time domain. The responses of FOWT are calculated under different load cases. It is shown that the amplitudes of sway and roll are excited by vortex excited force, and the roll amplitudes can reach to pitch value order in some circumstances. Due to the coupling effects, the heave motion is also influenced by vortex-induced forces. When vortex-shedding frequency is close to roll natural frequency, not only the roll but also the motions in other DOFs are increased and the super-harmonic resonance response occurs in heave motion.
机译：基于气动-水-涡-系泊耦合模型，研究了耦合的非线性运动和涡流引起的载荷对Spar型FOWT运动的影响。基于3D电位理论计算一阶和二阶差频波载荷;根据叶片单元动量理论计算转子上的空气动力学载荷。用CFD方法模拟了涡流诱发的载荷。悬链力由悬链理论解决，还考虑了恢复力的非线性问题。建立了非线性耦合模型，并建立了求解OC3-Hywind Spar型FOWT在时域中运动的数值代码。 FOWT的响应是在不同载荷工况下计算的。结果表明，摇摆和侧倾的振幅是由涡旋激振力激发的，在某些情况下侧倾的振幅可以达到俯仰值的阶次。由于耦合效应，升沉运动也受到涡流感应力的影响。当涡流脱落频率接近侧倾固有频率时，不仅侧倾增加，而且其他自由度中的运动也增加，并且在升沉运动中会发生超谐共振响应。

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