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在线性切片理论中水动力系数的计算剖面按对称剖面处理,而在大幅波浪中剖面非对称的影响不容忽视,为此提出了一种基于源汇分布法的二维非对称剖面水动力系数的求解方法.首先在二维柱体周界表面上连续分布强度待定的脉动点源,然后使流场速度势及流函数满足除物面条件以外的全部边界条件,再通过流函数物面条件的满足来求解出待定的源强,进而由流场的辐射势计算水动力系数.经与有关文献数据和实验数据的比较,验证了该方法计算的有效性.且实算表明,剖面非对称性对某些水动力系数的影响较大.
In the linear slice theory, the calculated hydrodynamic coefficients are symmetrically cross-sectionally profiled, while the asymmetric cross-section in large-amplitude waves can not be neglected. Therefore, a two-dimensional asymmetric profile hydrodynamic coefficient First of all, the point sources of pulsation of intensity to be determined are continuously distributed on the surface of the two-dimensional cylinder, and then the velocity potential and flow function of the flow field satisfy all the boundary conditions except the object surface conditions, Then the hydrodynamic coefficient is calculated by the radiation potential of the flow field.The validity of the method is verified by comparison with the relevant literature data and experimental data.The calculation shows that the asymmetry of the profile For some hydrodynamic coefficients of greater impact.