不同特征宽度对俘获宽度比的影响分析

Influence of Different Characteristic Width on Capture Width Ratio

特征宽度是计算波能转换装置俘获宽度比的重要参数,国内外目前尚无统一的计算方法。为了研究不同特征宽度计算方法对俘获宽度比结果的影响,提出了波能转换装置特征宽度的一种计算方法,利用典型振荡浮子式波能转换装置“Wavebob”的数据,建立振荡浮子AQWA数值模型并进行水动力学分析,计算了4种特征宽度计算方法下的能量俘获宽度以及俘获宽度比。研究结果表明,不同特征宽度的计算方法对俘获宽度比结果影响显著,规则波条件下的最大差值为27.19%,不规则波条件下为13.14%;因此在计算波能转换装置俘获宽度比时,应根据装置形式合理选择特征宽度计算方法。研究结果对于波能转换装置特征宽度的计算以及评价俘获性能方面具有重要的应用价值。

The characteristic width is an important parameter for calculating the capture width ratio of the wave energy converter,and there is no unified calculation method at present.To study the influence of different characteristic width calculation methods on the results of the capture width ratio,a calculation method for the characteristic width of the wave energy converter is proposed.Using the data of the typical oscillatory float wave energy conversion device"Wavebob",the numerical model of the oscillatory float AQWA was established and the hydrodynamic was carried out,and the energy capture width and capture width ratio of the device under four characteristic width calculation methods were calculated.The research results show that the calculation methods of different characteristic widths have a significant effect,the maximum difference of the capture width ratio under regular waves is 27.19%,and that under irregular waves is 13.14%;Therefore,when evaluating the capture width ratio of the wave energy conversion device,it is necessary to select the feature width calculation method reasonably according to the characteristics of the device.The established method has an important application value for the calculation of the characteristic width and the evaluation of the capture performance of the wave energy converter.