状态空间模型在海洋波能转换系统中的应用 Ⅱ.单个矩形振荡浮子装置运动受力分析的解析方法
Application of the state-space model to the system of wave energy conversion Ⅱ. Analytical method for wave forces on single oscillating rectangular buoy
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摘要: 对线性入射波作用下的矩形振荡浮子运动受力分析给出了一种新的解析方法.对该方法首先采用特征函数展开法得到绕射速度势的一种新解析式,然后直接由绕射势和入射势来计算波浪激励力.与经典方法相比可以看出,对于立面二维问题,由于绕射势和辐射势的计算量相当,因此该方法比过去常用的解析法更为简单.为了验证方法的正确性,采用该方法对过去文献介绍的经典算例进行了计算,得到了与过去方法完全一致的结果,从而证明该方法是正确的.Abstract: A new analytical method is proposed to analyze the force acting on a recangular oscillating buoy due to linear waves.In the method a new analytical expression for the diffraction velocity potential is obtained first by use of an eigenfunction expansion method and then the wave excitation force is calculated by use of the known incident wave potential and the diffraction potential.Compared with the classical analytical method,it can be seen that the present method is simpler for a two-dimensional problem due to the comparable effort needed for the computation of diffraction potential and for that of radiation potential.To verify the correctness of the method,a classical example in the reference is recomputed and the obtained results are in good accordance with those by use of other methods, which shows that the present method is correct.
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Key words:
- state-space model /
- oscillating buoy device /
- heaving /
- wave force /
- analytical method
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