Fully nonlinear wave-body interactions with surface-piercing bodies

Koo, Weoncheol; Kim, M.H.

doi:10.1016/j.oceaneng.2006.04.009

Cited by 75 publications

(50 citation statements)

References 8 publications

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“…Water depth is equaled to the wave length and h¼0.25 m, B¼0.5 m. The results of impact simulation are compared with the experimental results of Nojiri and Murayama (1975), analytical solution of Maruo (1960), BEM results of Koo and Kim (2007a) and numerical results of Li and Lin (2010) with ke model.…”

Section: Wave Impact Simulationmentioning

confidence: 99%

“…The calculated results are shown to be in good agreement with experimental and analytical data except the region of x41.5. Koo and Kim (2007a) considered the floating bodies based on potential theory and boundary element method (BEM). The comparison between the BEM results and present results shows that the present results based on turbulent theory are more close to experimental data than Koo and Kim's, which indicates that the turbulence of fluid has an important influence on the wave-body interaction.…”

Section: Wave Impact Simulationmentioning

confidence: 99%

“…There are many correlative studies on the interactions between the water waves and structures with different types, including the fully submerged structures (Clement and Mas, 1995;Boo, 2002;Koo et al, 2004;Vengatesan et al, 2006, etc. ), vertical cylinders/ plates (Li and Lin, 2001;Pradip and Sukamal, 2006;Wang and Wu, 2010, etc.…”

Section: Introductionmentioning

confidence: 99%

“…In Boo's work (2002), a time-domain numerical scheme was used to simulate the linear irregular waves in numerical tank and the linear and nonlinear irregular wave diffraction forces acting on a submerged structure was predicted. Koo and Kim (2007a) studied the wave body interactions for stationary floating single and double bodies using a potential-theory-based fully nonlinear 2-D numerical wave tank. Li and Lin (2010) investigated the fully nonlinear wave-body interactions for a surface-piercing body in finite water depth with flat/slop bottom topography.…”

Section: Introductionmentioning

confidence: 99%

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Regular and irregular wave impacts on floating body

Lin

2012

Ocean Engineering

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a b s t r a c tFully nonlinear wave-body interactions for a stationary floating structure under regular and irregular waves for different water depths, wave heights and periods are studied in a 2-D numerical wave tank. The tank model is based on Reynolds-averaged Navier-Stokes equations and renormalization group k-e model. The equations are discretized based on the finite volume method. The pressure implicit splitting of operators scheme is employed to treat the pressure-velocity coupling and a compressive interface capturing scheme is used to capture the free surface on mashes of arbitrary topology. The calculated results for regular wave simulation, irregular wave propagation and wave impacts on floating body are compared with the theoretical/experimental data and the numerical results agree well with analytical/ experimental solutions. The mean and maximum wave impacts, including rotational moment, on body are obtained. The effects of water depth, wave height and period on forces and moment have been investigated and the calculated results for irregular waves are compared with those induced by regular waves.

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Section: Wave Impact Simulationmentioning

confidence: 99%

Section: Wave Impact Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Regular and irregular wave impacts on floating body

Lin

2012

Ocean Engineering

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“…Maiti & Sen(2001), Koo & Kim (2007) and Wang et al (2011)]. This may be acceptable for the cases with two long structures with similar sizes.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigations on transient behaviours of two 3-D freely floating structures by using a fully nonlinear method

Yan

Cheng³

2012

J. Marine. Sci. Appl.

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This is the accepted version of the paper.This version of the publication may differ from the final published version. Abstract: Two floating structures in close proximity are very commonly seen in offshore engineering. They are often subjected to steep waves and, therefore, the transient effects on their hydrodynamic features are of great concern. This paper uses the quasi arbitrary Lagrangian-Eulerian finite element method (QALE-FEM), based on the fully nonlinear potential theory (FNPT), to numerically investigate the interaction between two three-dimensional (3D) floating structures, which undergoes motions with 6 degrees of freedom (DOFs), and are subjected to waves with different incident angles. The transient behaviours of floating structures, the effect of the accompanied structures and the nonlinearity on the motion of and the wave loads on the structures are the main focuses of the study. Permanent repository link

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Boundary‐Element Methods and Wave Loading on Ships

Κώστας¹,

Kaklis

Politis

et al. 2017

Encyclopedia of Computational Mechanics Second Edition

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The hydrodynamic problem of a ship moving with constant forward speed while undergoing small‐amplitude oscillatory motions about its mean steady‐state position is modeled as a boundary‐integral equation (BIE) involving surface distributions of the fundamental solution of Laplace's equation and its derivatives and alternative Green functions. The chapter reviews the various low‐order and higher order boundary‐element methods (BEMs) developed for the numerical solution of these BIEs via collocation or Galerkin techniques involving finite‐dimensional bases for representing the involved geometric configuration and approximating the unknown physical quantities. Then, we focus on presenting and discussing recent experience gained from embedding BEMs into isogeometric analysis (IGA) for the linear wave‐resistance problem. Two IGA‐BEM solvers, based on nonuniform rational B‐spline (NURBS) and T‐spline representations of the ship hull, are presented and compared for the so‐called Neumann–Kelvin formulation of this problem. The local refinement capabilities of the adopted T‐spline representation of the ship geometry leads to a solver with higher accuracy and efficiency as compared to the corresponding NURBS‐based solver. Furthermore, the developed hydrodynamic solvers, along with the corresponding ship‐parametric models, are integrated within an optimization environment, which is tested in two optimization problems. The first problem, of local optimization character, focuses on the optimization of the bulbous shape of a container ship against the criterion of minimum wave resistance. The second case performs a global hull‐shape optimization of a container ship targeting the minimization of both the total resistance and the deviation from a target deadweight. The chapter ends with a brief discussion for further research toward broadening the coverage of IGA‐BEM methods in application areas related to ship wave loads.

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Fully nonlinear wave-body interactions with surface-piercing bodies

Cited by 75 publications

References 8 publications

Regular and irregular wave impacts on floating body

Regular and irregular wave impacts on floating body

Numerical investigations on transient behaviours of two 3-D freely floating structures by using a fully nonlinear method

Boundary‐Element Methods and Wave Loading on Ships

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