Numerical Investigation of a Variable-Shape Buoy Wave Energy Converter
Numerical Investigation of a Variable-Shape Buoy Wave Energy Converter
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DOI：
10.1115/omae2021-63594
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发表时间：
2021-06
期刊：
影响因子：
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通讯作者：
M. Shabara;Shangyan Zou;O. Abdelkhalik
中科院分区：
文献类型：
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作者：
M. Shabara;Shangyan Zou;O. Abdelkhalik
分析了一种以消除无功需求为目标的新型变形状浮标波浪能转换器（VSB WEC）。与传统的固定形状浮标波浪能量转换器（FSB WEC）不同，VSB WEC允许对海浪进行连续的形状变化（灵活）响应。当使用简单、低成本的阻尼控制系统时，证明了器件与波之间的非线性相互作用可以产生更大的功率。本文进行了高保真数值模拟，比较了在相同体积和质量的情况下，VSB WEC与传统FSB WEC在功率转换、最大位移和速度方面的性能。利用ANSYS开发的基于计算流体力学（CFD）的数值波槽（CNWT）进行模拟。结果表明，采用VSB WEC时，平均功率转换显著提高。
A novel Variable-Shape Buoy Wave Energy Converter (VSB WEC) that aims at eliminating the requirement of reactive power is analyzed in this paper. Unlike conventional Fixed Shape Buoy Wave Energy Converters (FSB WECs), the VSB WEC allows continuous shape-changing (flexible) responses to ocean waves. The non-linear interaction between the device and waves is demonstrated to result in more power when using simple, low-cost damping control system. High fidelity numerical simulations are conducted to compare the performance of a VSB WEC to a conventional FSB WEC, of the same volume and mass, in terms of power conversion, maximum displacements, and velocities. A Computational Fluid Dynamics (CFD) based Numerical Wave Tank (CNWT), developed using ANSYS 2-way fluid-structure interaction (FSI) is used for simulations. The results show that the average power conversion is significantly increased when using the VSB WEC.