FloVAWT: Progress on the Development of a Coupled Model of Dynamics for Floating Offshore Vertical Axis Wind Turbines
FloVAWT: Progress on the Development of a Coupled Model of Dynamics for Floating Offshore Vertical Axis Wind Turbines
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DOI：
10.1115/omae2013-10717
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发表时间：
2013-06
期刊：
影响因子：
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通讯作者：
M. Collu;Mitchell G. Borg;A. Shires;F. Brennan
中科院分区：
文献类型：
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作者：
M. Collu;Mitchell G. Borg;A. Shires;F. Brennan
本文介绍了浮式垂直轴风力机气动-液压-伺服-弹性耦合动力学模型的研究进展。空气动力学基于Paraschivoiu的双多流管(DMST)模型[1][2]，依赖于叶片单元动量(BEM)理论，但也考虑了三维效应、动态失速、非定常风廓线和平台运动。基于用频率分析势方法估计的水动力系数，用时间域耐波性模型[3]对水动力学进行建模。在这个研究计划的第一阶段，系统被认为是刚体。系泊系统由用户自定义的力-位移关系表示，由于缺乏海上浮式VAWTs的实验数据，初步验证了该模型的有效性，将模型中的各个模块分开并与已知的实验数据进行了比较，具有较好的一致性。通过一个案例研究说明了该程序的能力，深入了解了空气动力载荷和陀螺效应相对于流体动力载荷效应的相对重要性。版权所有©2013，ASME
In the present article, progress on the development of an aero-hydro-servo-elastic coupled model of dynamics for floating Vertical Axis Wind Turbines (VAWTs) is presented, called FloVAWT (Floating Vertical Axis Wind Turbine). Aerodynamics is based on Paraschivoiu’s Double-Multiple Streamtube (DMST) model [1] [2], relying on blade element momentum (BEM) theory, but also taking into account three-dimensional effects, dynamic stall, and unsteady wind profiles and platform motions. Hydrodynamics is modelled with a time domain seakeeping model [3], based on hydrodynamic coefficients estimated with a frequency analysis potential method. In this first phase of the research program, the system is considered a rigid body. The mooring system is represented through a user defined force-displacement relationship.Due to the lack of experimental data on offshore floating VAWTs, the model has initially been validated by taking each module separately and comparing it against known experimental data, showing good agreement. The capabilities of the program are illustrated through a case study, giving an insight on the relative importance of aerodynamics loads and gyroscopic effects with respect to hydrodynamic load effects.Copyright © 2013 by ASME