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岸式振荡水柱波能转换装置的数值模拟

DOI: 10.3969/j.issn.1006-7043.201306002

Keywords: 振荡水柱, 源造波技术, 高阶边界元, 时域分析, 能量转换效率, 前墙尺寸, 气室, 共振

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Abstract:

针对岸式振荡水柱波能转换装置(OWC)的能量转换效率问题,采用基于域内源造波技术的时域高阶边界元方法(HOBEM),同时在气室内引入压强模型耦合气液相互作用,建立了自由水面满足完全非线性边界条件的二维时域数值波浪水槽模型。通过数值计算研究了岸式振荡水柱波能转换装置的前墙入水深度、前墙厚度、气室宽度及入射波要素对气室内波能转换效率的影响。结果表明:岸式振荡水柱波能转换装置存在一个明显的共振区间,前墙入水深度、厚度与气室宽度的减小均会导致共振频率的增大;前墙尺寸的变化对低频区能量转换效率的影响很小,而气室宽度的变化会影响整个工作频率区间的能量转换效率。

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