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首页> 外文期刊>Ocean Engineering >Composite bottom panel slamming of a fast planing hull via tightly coupled fluid-structure interaction simulations and sea trials
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Composite bottom panel slamming of a fast planing hull via tightly coupled fluid-structure interaction simulations and sea trials

机译：通过紧密耦合的流固耦合模拟和海试，对快速滑行船体进行复合底板撞击

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The paper presents partitioned tightly coupled fluid-structure interaction (FSI) simulations for composite panel slamming of a high-speed planing hull, including comparison with full-scale experiments. Panels with different layout/stiffness are investigated. Computational fluid dynamics (CFD) is performed using the URANS code CFDShip-Iowa. Computational structural dynamics (CSD) uses modal expansion by ANSYS finite elements. One-and two-way tightly coupled FSI is performed. The complexity of sea-trial conditions is reduced by statistical/frequency analysis, allowing for a simplified representation by one regular wave. Simulations provide details of slamming, including correlation of re-entering pressure peaks with motions and strain peaks. Numerical/modeling issues are discussed. Expected value and associated uncertainty of experimental pressure/ strain peak and duration are used for validation. The difference of panels' dynamics is well predicted. Validation errors and uncertainties (average 25% and 14%) are quite large. Nevertheless, errors always fall within one standard deviation of experimental-data individual readings. Results are promising especially if compared to earlier slamming studies for regular/irregular waves in controlled towing tank tests, which show average error and validation uncertainty of 25% and 10%. The current study lays the groundwork for research on high-fidelity CFD/CSD FSI of real-world geometry slamming and ultimately multidisciplinary design optimization of structural and hull-form parameters.
机译：本文介绍了用于高速滑行船体的复合面板撞击的分区紧密耦合的流固耦合（FSI）模拟，包括与全尺寸实验的比较。研究了具有不同布局/刚度的面板。使用URANS代码CFDShip-Iowa执行计算流体动力学（CFD）。计算结构动力学（CSD）使用ANSYS有限元进行模态扩展。执行单向和双向双向紧密耦合FSI。统计/频率分析降低了海试条件的复杂性，从而可以通过一个规则的波来简化表示。仿真提供了撞击的详细信息，包括重新输入压力峰值与运动和应变峰值的相关性。讨论了数值/建模问题。实验压力/应变峰值和持续时间的期望值和相关不确定性用于验证。面板动力学的差异可以很好地预测。验证错误和不确定性很大（平均25％和14％）。然而，误差总是落在实验数据单个读数的一个标准偏差之内。尤其是将结果与比较早的在受控拖曳罐试验中对规则/不规则波的撞击研究进行比较，结果表明平均误差和验证不确定性分别为25％和10％。当前的研究为现实世界几何撞击的高保真CFD / CSD FSI研究以及最终对结构和船体形式参数的多学科设计优化奠定了基础。

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