Hydrodynamic interaction of side-by-side floating bodies, Part II: Applications of modified linear potential flow and numerical analysis framework to fixed barges
Hydrodynamic interaction of side-by-side floating bodies, Part II: Applications of modified linear potential flow and numerical analysis framework to fixed barges
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DOI：
10.1016/j.oceaneng.2018.06.060
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发表时间：
2018-09
影响因子：
5
通讯作者：
Kie Hian Chua;R. Taylor;Y. Choo
中科院分区：
文献类型：
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作者：
Kie Hian Chua;R. Taylor;Y. Choo
利用第一部分中开发的分析框架，对并排驳船之间的水动力相互作用进行了数值研究，包括间隙自由表面响应和强迫。假定驳船是刚性固定的。进行了两组调查，都涵盖了入射波频率的范围。第一组检查间隙宽度对两艘具有方形底舱角的矩形驳船之间自由表面响应的影响。根据分析框架，进行了选定的一组粘性模拟，并将所得的流场数据用于量化通过表面摩擦和旋涡脱落的粘性损失。这些量化的损失被转换成耗散系数，用于修改后的线性势流代码，调查一组更大的负载情况相比，粘性模拟。间隙自由表面的响应和强迫预测使用代码进行比较，从粘性模拟结果和讨论。基于这些结果，提出了一种有效的并行水动力相互作用模型的求解策略。第二组调查研究了舱底曲率对两艘驳船之间的水动力相互作用的影响，并表明该框架也可用于研究船体几何参数的变化。
Numerical investigations of hydrodynamic interactions between side-by-side barges, in terms of gap free-surface response and forcings, are carried out using the analysis framework developed in Part I. The barges are assumed to be rigidly fixed. Two sets of investigations are carried out, both covering a range of incident wave frequencies. The first set examines the influence of gap width on free-surface response between two rectangular barges with square bilge corners. Following the analysis framework, a selected set of viscous simulations are carried out and the resulting flow field data are used to quantify the viscous losses through skin friction and vortex shedding. These quantified losses are converted into dissipation coefficients for use in a modified linear potential flow code, to investigate a larger set of loadcases compared to the viscous simulations. Gap free-surface responses and forcings predicted using the code are compared with results from viscous simulations and discussed. Based on the results, an efficient solution strategy for modelling side-by-side hydrodynamic interactions is proposed. The second set of investigations studies the effect of bilge curvature on the hydrodynamic interactions between the two barges and demonstrates that the framework can also be used to study variations in hull geometric parameters.