In this study, a novel floating dual-chamber backward bent duct buoy oscillating water column (BBDB-OWC) wave energy converter (WEC) is introduced, featuring a horizontal plate at the bottom of the front chamber to act as an enhancement plate. A three-dimensional computational fluid dynamics (CFD) model is developed and validated by comparing its results with existing experimental measurements. The validated model is employed to investigate the hydrodynamic performance and power generation characteristics of the dual-chamber BBDB-OWC WEC under various conditions, including variations in the length of the horizontal plate (/) and different regular wave conditions. Key performance metrics, including peak to average ratio of power (PTARP), wave energy capture width ratio (), and its wave period respond bandwidth (indicated by and ), are analyzed and compared with those of a traditional single-chamber BBDB-OWC WEC. The results reveal that, compared to the single-chamber WEC, the dual-chamber WEC with a specific horizontal plate length reduces the average PTARP from 2.88 to a minimum value of 1.82 for / = 0.5, improves the average from 0.55 to a maximum value of 0.64 for / = 2.5, and increases and from 71 % and 14 % to maximum values of 86 % and 43 % for / = 2.5, respectively. An explanation for these observations is also provided in the context of structure motion and flow fields.

中文翻译：

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使用双室和新型增强板提高浮动 BBDB-OWC 系统的波浪能转换性能

在这项研究中，介绍了一种新型浮动双室后弯导管浮标振荡水柱（BBDB-OWC）波浪能转换器（WEC），其前室底部有一个水平板作为增强板。通过将其结果与现有实验测量结果进行比较，开发并验证了三维计算流体动力学 (CFD) 模型。采用经过验证的模型研究了双室 BBDB-OWC WEC 在各种条件下的水动力性能和发电特性，包括水平板 (l) 长度的变化和不同规则波浪条件下的水动力性能和发电特性。分析了关键性能指标，包括峰均功率比 (PTARP)、波浪能量捕获宽度比 () 及其波浪周期响应带宽（由 和 表示），并与传统单室 BBDB-OWC 的关键性能指标进行了分析和比较世界能源理事会。结果表明，与单室WEC相比，具有特定水平板长度的双室WEC将平均PTARP从2.88降低到最小值1.82（对于/ = 0.5），将平均值从0.55提高到最大值当 / = 2.5 时， 为 0.64； 当 / = 2.5 时， 和 分别从 71 % 和 14 % 增加到最大值 86 % 和 43 %。在结构运动和流场的背景下还提供了对这些观察结果的解释。