Nonlinear simulations of wave-induced motions of a freely floating body using WCSPH method

Ren, Bing; He, Ming; Dong, Ping; Wen, Hongjie

doi:10.1016/j.apor.2014.12.003

Cited by 136 publications

(97 citation statements)

References 31 publications

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“…To find out the optimum particle spacing and to validate the proposed numerical method simulation for free roll decay, a rectangular floating body in calm water is considered. The experimental data of Ren et al is used for this test. They performed damped roll oscillation of a rectangular floating body having dimensions 0.3 m × 0.2 m in a wave flume.…”

Section: Numerical Tests and Discussionmentioning

confidence: 99%

“…Hashemi et al performed falling of two circular cylinders through a vertical channel and Canelas et al modeled rising as well as sinking of a circular cylinder in water using WCSPH method. Bouscasse et al adopted WCSPH method to study the response of rectangular floating body under wave packets and Ren et al also adopted WCSPH method to predict the motion of freely floating body in waves. To improve the efficiency of WCSPH method, Omidvar et al introduced variable particle mass technique, which reduces the computation effort by reducing the number of particles in the fluid domain.…”

Section: Introductionmentioning

confidence: 99%

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Variable spaced particle in mesh‐free method to handle wave‐floating body interactions

Rijas

Sriram

Yan

2019

Numerical Methods in Fluids

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Summary In this work, the motion of a two‐dimensional rectangular freely floating body under waves is simulated using Improved Meshless Local Petrov‐Galerkin method with Rankine Source function (IMLPG_R) with variable spacing resolutions. The IMLPG_R method is a particle method that solves Navier–Stokes equations using the fractional step method to capture the wave properties. However, many existing particle methods are computationally intensive to model the wave‐floating body due to the requirement of fine particles, needing uniform distribution throughout the domain. To improve the computational efficiency and capture the body response properly, variable spaced particle distribution with fine resolution near the floating body and coarse resolution far from the body is implemented. Numerical schemes to handle variable resolutions are reported. An iterative scheme to handle the wave‐floating body is implemented in the particle method. Two test cases, one with small wave and another with steep waves, are simulated for uniform particle distribution and the result shows good agreement with literature. Based on this, the performance of the variable spaced particle distribution is tested in coupling with floating body solver. The application of the method for wave impact load from the green water loading of the floating structure is also simulated.

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Section: Numerical Tests and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Variable spaced particle in mesh‐free method to handle wave‐floating body interactions

Rijas

Sriram

Yan

2019

Numerical Methods in Fluids

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“…Some studies even consider multi-degrees of the freedom, as documented by Bouscasse et al (2013), Liu et al (2014), Amicarelli et al (2015), Ren et al (2015) and Canelas et al (2015).…”

Section: Introductionmentioning

confidence: 99%

Smoothed Particle Hydrodynamics Simulations of Dam-Break Flows Around Movable Structures

Jian

Liang

Shao

et al. 2016

IJOPE

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In this paper, 3D weakly compressible and incompressible Smoothed Particle Hydrodynamics (WCSPH & ISPH) models are used to study dam-break flows impacting on either a fixed or a movable structure. First, the two models' performances are compared in terms of CPU time efficiency and numerical accuracy, as well as the water surface shapes and pressure fields. Then, they are applied to investigate dambreak flow interactions with structures placed in the path of the flood. The study found that the ISPH modelling approach is slightly superior to the WCSPH approach, since more stable particle motion and pressure distribution can be achieved with reasonable CPU load.

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“…Since Monaghan [8] pioneered the first simulation of a simple dam break problem using SPH, it has been successfully applied to fluid mechanics problems such as wave overtopping [9,10] and wave slamming [11,12]. Later it has been extended to solve fluid-structure interaction problems including wave interactions with caisson breakwaters [13,14], with floating bodies [15][16][17][18] and with porous structures [19][20][21][22] as well as wave interactions with mound breakwater protected by armour blocks being discretized using SPH particles [23,24]. Nevertheless, the studies mentioned above have all focused on two dimensional applications of SPH and few researches are confronting 3D problems due to the high computational cost of 3D SPH models except some applications concerned with dam break [25][26][27] and wave breaking [23,28,29].…”

Section: Introductionmentioning

confidence: 99%

A SPH numerical wave basin for modeling wave-structure interactions

Wen

Ren

Dong

et al. 2016

Applied Ocean Research

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. (2016). A SPH numerical wave basin for modeling wave-structure interactions. Applied Ocean Research, 59, 366-377. DOI: 10.1016/j.apor.2016 General rights Copyright and moral rights for the publications made accessible in Discovery Research Portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from Discovery Research Portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain.• You may freely distribute the URL identifying the publication in the public portal. Take down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Abstract: Based on a parallel SPH-LES model, a three dimensional numerical wave basin is developed to study wave interaction with coastal structures. The OpenMP programming technology combined with an existing MPI program contained in the parallel version of SPHYSICS code has been implemented to enable the simulation of hundred millions of particles running on a computer cluster. As part of the numerical basin development work an active absorbing wave maker and a sponge layer are introduced. The dynamic boundary conditions are also corrected to reduce the spurious effects. Wave generation and propagation in the numerical wave basin is first tested and confirmed with analytical results. Then, the model is applied to simulate wave interactions with a vertical breakwater and a vertical cylinder in order to further assess the capability of the numerical wave basin. The predicted free surface elevation near the vertical breakwater is compared with the experimental data while the horizontal forces and overturning moments acting on the vertical cylinder are verified with the analytical results. In all these cases the model results show excellent agreement with the validation data.

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Nonlinear simulations of wave-induced motions of a freely floating body using WCSPH method

Cited by 136 publications

References 31 publications

Variable spaced particle in mesh‐free method to handle wave‐floating body interactions

Variable spaced particle in mesh‐free method to handle wave‐floating body interactions

Smoothed Particle Hydrodynamics Simulations of Dam-Break Flows Around Movable Structures

A SPH numerical wave basin for modeling wave-structure interactions

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