Exact pressure integrations on submerged bodies in waves using a quadtree adaptive mesh algorithm

Rodrigues, José Miguel; Soares, C. Guedes

doi:10.1002/fld.3948

Cited by 20 publications

(6 citation statements)

References 36 publications

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“…Examples of the computation of the nonlinear hydrostatic and Froude-Krylov loads based on the panel cutting method may be found in [11,12,13]. The original mesh is recursively subdivided at the incident wave elevation using a quadtree process.…”

Section: Part I: Coupling Between the Panel Cutting Methods And The Admentioning

confidence: 99%

Development of a Panel Cutting Method Coupled With an Unsteady Potential Flow Model Based on the Weak-Scatterer Approximation

Wuillaume

Ferrant

Babarit

et al. 2019

Volume 10: Ocean Renewable Energy

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This paper presents a new mesh strategy for unsteady potential flow based solvers. It is based on the coupling between a panel cutting method used for the body mesh and an advance front method to generate the free surface mesh. The goal is to deal with complex geometries for time-domain simulations for marine operations. Firstly, the new mesh generation process is presented in details. Then, two validation tests are presented, using an academic geometry (vertical surface-piercing cylinder) and a complex geometry (FPSO).

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Section: Part I: Coupling Between the Panel Cutting Methods And The Admentioning

confidence: 99%

Development of a Panel Cutting Method Coupled With an Unsteady Potential Flow Model Based on the Weak-Scatterer Approximation

Wuillaume

Ferrant

Babarit

et al. 2019

Volume 10: Ocean Renewable Energy

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“…Such analysis, which is presented e.g. by Guedes Soares (2008a, 2008b), Jia and Moan (2012) and Rodrigues and Guedes Soares (2014), is outside the scope of the present paper.…”

Section: Introductionmentioning

confidence: 90%

CFD based computation of bow impact loads for buckling assessment

Oberhagemann¹,

Radon²,

Lee³

2015

Analysis and Design of Marine Structures V

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The purpose of the paper is to compare two simplified methods that may be used for modeling wave-induced motion and resulting structural loads of ship damaged in collision or grounding accident. The first method is the added mass method, in which it is assumed that the mass of the flooded seawater becomes integral part of the ship mass and moves with the ship. The second approach is the lost buoyancy method, where structure of damaged tanks and all of its contents are removed from the vessel. The former method is applicable for small damages while the latter is more suited for large damage extents. Response amplitude operators of vertical motions and hull girder vertical wave bending moments at amidships are calculated by the state-of-the-art linear 3D panel hydrodynamic code and compared to those for intact ship as the effect of damage is often neglected in computation of motions and wave loads of damaged vessel. An attempt of verification of procedures is done by comparison with seakeeping experiments on damaged warship, described in available literature.

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“…Another tool, applying a generalised adaptive mesh pressure integration technique (GAMPIT), was presented and validated by Rodrigues and Guedes Soares in 2015 [25]. The exact pressure integration expressions for Froude-Krylov forces and moments applied on arbitrary polygons had been derived in 2014 [76]. Application to cases of progressive flooding of ships in calm waters [77][78][79][80], including waves in intact [81,82] and damaged [46] ships, were presented throughout 2015-2017.…”

Section: Consolidation Of Models: 2000-2017mentioning

confidence: 99%

A Review of Methods for Modelling Flooding, Its Progression and Outcome in Damaged Ships

Rodrigues

2024

JMSE

Self Cite

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The timely and precise prediction of flooding progression and its eventual outcome in ships with breached hulls can lead to dramatic improvements in maritime safety through improved guidance for both emergency response and ship design. The traditional approach to assessing damage-induced flooding in both these stages, which also fully complies with statutory rules, is through static calculations. On the other hand, the application of models that simulate the flooding progression and the behaviour of flooded ships from, or close to, first principles allows for increased accuracy of the modelling of the phenomenon. This increase in accuracy can then be used to support advanced design for safety procedures. Furthermore, it can considerably enhance a ship’s capability for damage identification and inference-based logic for emergency decision support systems and marine accident response in general. This paper conducts a review of selected state-of-the-art methods, procedures, and case studies in recent years which aimed to model progressive flooding and damage ship behaviour and provide some explanations of fundamentals. Applications related to damage identification, the prediction of outcome/situation awareness, and flooding emergency response are also briefly discussed. The paper concludes with a brief reflection on salient gaps in the context of accelerating the development of these methods and their applicability.

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Exact pressure integrations on submerged bodies in waves using a quadtree adaptive mesh algorithm

Cited by 20 publications

References 36 publications

Development of a Panel Cutting Method Coupled With an Unsteady Potential Flow Model Based on the Weak-Scatterer Approximation

Development of a Panel Cutting Method Coupled With an Unsteady Potential Flow Model Based on the Weak-Scatterer Approximation

CFD based computation of bow impact loads for buckling assessment

A Review of Methods for Modelling Flooding, Its Progression and Outcome in Damaged Ships

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