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On the equivalence of unidirectional rogue waves detected in periodic simulations and reproduced in numerical wave tanks

机译：关于在周期性模拟中检测到并在数值波箱中复制的单向流浪的等效性

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This paper deals with the reproduction of unidirectional extreme events in a numerical wave basin. From a rogue wave measurement at a given location, experiments or numerical simulations are conducted with the same wave profiles using reproduction procedures. Although it is recognized that many different physical mechanisms may be at play in freak wave formation, reproduction procedures generally use frequency focusing to generate these high waves. This paper intends to assess the validity of this approach. In particular, it will focus on the relationship between an accurate reproduction of the free surface elevation and the accuracy of the corresponding wave kinematics inside the fluid domain. A highly nonlinear model is used to compute the occurrence of unidirectional freak waves in large periodic domain, which are reproduced in a 2-D numerical wave tank and compared. The study presents an advanced reproduction procedure that deals with rogue waves embedded in an irregular sea state. It shows that, using the appropriate reproduction procedure, it is possible to accurately reproduce free surface elevation as well as kinematics induced by this extreme event. (C) 2016 Elsevier Ltd. All rights reserved.
机译：本文涉及数值波盆中单向极端事件的再现。从给定位置的流浪波测量结果，使用再现程序对相同的波剖面进行实验或数值模拟。尽管已经认识到畸形波形成中可能有许多不同的物理机制，但是再现过程通常使用频率聚焦来产生这些高波。本文旨在评估这种方法的有效性。特别地，它将集中在自由表面高程的精确再现与流体域内的相应波运动学的精度之间的关系。使用高度非线性的模型来计算大周期域中单向畸形波的出现，这些畸变波在二维数值波箱中再现并进行比较。这项研究提出了一种先进的繁殖程序，该程序处理嵌入在不规则海况中的流浪。它表明，使用适当的再现程序，可以准确地再现自由表面高程以及由该极端事件引起的运动学。 （C）2016 Elsevier Ltd.保留所有权利。

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