Dynamics of a moored barge under regular and random waves

Shashikala, A. P.; Sundaravadivelu, R.; Ganapathy, C.

doi:10.1016/s0029-8018(96)00019-4

Cited by 11 publications

(8 citation statements)

References 3 publications

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“…Fig. 10, together with the experimental data from Shashikala et al [64]. It can be found from this figure that the present numerical results generally agree well with experimental data in a P e e r R e v i e w O n l y 30 wide range of frequencies, though visible discrepancies at some points inevitably exist.…”

Section: Raos Of Surge Heave and Pitch Of A Barge-type Floating Bodysupporting

confidence: 82%

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QALE‐FEM for numerical modelling of non‐linear interaction between 3D moored floating bodies and steep waves

Yan

2008

Numerical Meth Engineering

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This is the accepted version of the paper.This version of the publication may differ from the final published version. applied to 2D floating bodies), the complex unstructured mesh is generated only once at the beginning of calculation and is moved to conform to the motion of boundaries at other time steps by using a robust spring analogy method specially suggested for this kind of problems, avoiding the necessity of high cost remeshing. Permanent repository linkIn order to tackle challenges associated with 3D floating bodies, several new numerical techniques are developed in this paper. These include the technique for moving the mesh near body surfaces, the scheme for calculating velocity on 3D body surfaces and the ISITIMFB-M (Iterative Semi-Implicit Time IntegrationMethod for Floating Bodies -Modified) procedure that is more efficient for dealing with the full coupling between waves and bodies. Using the newly developed techniques and methods, various cases for 3Dfloating bodies with motions of up to 6 degrees of freedom (DoFs) are simulated. These include a SPAR platform, a barge-type floating body and one or two Wigley Hulls in head seas or in oblique waves. For some selected cases, the numerical results are compared with experimental data available in the public domain and satisfactory agreements are achieved. Many results presented in this paper have not been found elsewhere to the best knowledge of the authors.

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Section: Raos Of Surge Heave and Pitch Of A Barge-type Floating Bodysupporting

confidence: 82%

“…For this purpose, the QALE-FEM is applied to a similar case in experiments on a barge-type floating body by Shashikala, Sundaravadivelu & Ganapathy [64]. These experiments were carried out in a tank with water depth of 2.35m.…”

Section: Raos Of Surge Heave and Pitch Of A Barge-type Floating Bodymentioning

confidence: 99%

QALE‐FEM for numerical modelling of non‐linear interaction between 3D moored floating bodies and steep waves

Yan

2008

Numerical Meth Engineering

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“…The total stiffness coupling matrix, G b m (Z W m ), in eq. (18), based on Shashikala et al [6], is given by: (9), and…”

Section: Kinematics Of Ship and Harvester Motionsmentioning

confidence: 99%

Optimal harvesting patterns for a seaweed harvester

Gallieri¹,

Ringwood

2009

IET Irish Signals and Systems Conference (ISSC 2009)

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-In this paper, a 9 degree of freedom seaweed harvester dynamical model is presented. The model presented describes the coupled dynamics of a vessel and a harvesting device, lifted by a winch, subject to sea waves disturbances. In order to find an appropriate harvesting path, which minimizes the harvester motions, the model response is simulated for different encounter angles. This 9 DOF seaweed harvester model is defined by merging the unified ship model, given in Fossen

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“…flexibility of future extensions, mobility, preservation of environments and economical efficiency, etc. As a result, a few investigations have proposed to improve the performance of floating breakwaters [1,2,3,5,8,11,12,14]. Of these, most numerical approaches relating to floating breakwaters have focused on developing numerical techniques that capture the fully nonlinear free-surface motion based on a grid system.…”

Section: Introductionmentioning

confidence: 99%

Numerical prediction for the performance of a floating-type breakwater by using a two-dimensional particle method

Lee¹,

Hwang²,

Nam³

et al. 2011

International Journal of Ocean System Engineering

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The nonlinear free-surface motions interacting with a floating body were investigated using the Moving Particle Semi-implicit (MPS) method proposed by Koshizuka and Oka [6] for incompressible flow. In the numerical method, more realistic Lagrangian moving particles were used for solving the flow field instead of the Eulerian approach with a grid system. Therefore, the convection terms and time derivatives in the Navier-Stokes equation can be calculated more directly, without any numerical diffusion, instabilities, or topological failure. The MPS method was applied to a numerical simulation of predicting the efficiency of floating-type breakwater interacting with waves.

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Dynamics of a moored barge under regular and random waves

Cited by 11 publications

References 3 publications

QALE‐FEM for numerical modelling of non‐linear interaction between 3D moored floating bodies and steep waves

QALE‐FEM for numerical modelling of non‐linear interaction between 3D moored floating bodies and steep waves

Optimal harvesting patterns for a seaweed harvester

Numerical prediction for the performance of a floating-type breakwater by using a two-dimensional particle method

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