Three‐dimensional wave impact on a rigid structure using smoothed particle hydrodynamics

Cummins, Sharen J.; Silvester, Todd; Cleary, Paul W.

doi:10.1002/fld.3690

Cited by 15 publications

(27 citation statements)

References 15 publications

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“…Examples are the studies of Gómez-Gesteira and Dalrymple (2004) and Cummins et al (2012) who examined the impact of a single wave, originating from a dam-break, with a tall coastal structure. In both studies, the structure was a vertical rectangular column.…”

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confidence: 99%

Three-dimensional steep wave impact on a vertical cylinder

2016

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The present study treats the three-dimensional hydrodynamic slamming problem on a vertical plate subjected to the impact of a steep wave moving towards the plate with a constant velocity. The problem is complicated significantly by assuming that there is a rectangular opening on the plate which allows the discharge of the liquid. The analysis is conducted analytically assuming linear potential theory. The examined configuration determines two boundary value problems with mixed conditions which should be taken into account properly. The mathematical process assimilates the plate with a degenerate elliptical cylinder allowing thus the employment of elliptical harmonics that ensure the satisfaction of the free-surface boundary condition of the front face of the steep wave, beyond the plate. This assumption leads to an additional boundary value problem with mixed conditions in the vertical direction. The associated problem involves triple trigonometrical series and it is solved through a transformation into integral equations. To tackle the boundary value problem in the vertical direction a perturbation technique is employed. Extensive numerical calculations are presented as regards the variation of the velocity potential on the plate at the instant of the impact which reveals the influence of the opening. The theory is extended to the computation of the total impulse exerted on the plate using pressure-impulse theory.

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confidence: 99%

Three-dimensional steep wave impact on a vertical cylinder

2016

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“…In a real situation, the pressure acting on the structure at the time of initial impact is very high (Aureli, Dazzi, Maranzoni, Mignosa, & Vacondio, 2015;Cummins, Silvester, & Cleary, 2012;Kleefsman, Fekken, Veldman, Iwanowski, & Buchner, 2005). Common methods used in these three dimensional (3D) numerical models are based on Reynolds averaged Navier-Stokes equations integrated by smoothed particle hydrodynamics (SPH) Lagrangian methods (Barreiro, Crespo, Domínguez, & Gómez-Gesteira, 2013;Colagrossi & Landrini, 2003;Colagrossi, Lugni, & Brocchini, 2010;Cummins et al, 2012;Cuomo, Allsop, Bruce, & Pearson, 2010;Ferrari, Dumbser, Toro, & Armanini, 2009), Eulerian methods (Abdolmaleki, Thiagarajan, & Morris-Thomas, 2004;Kleefsman et al, 2005;Yang, Lin, Jiang, & Liu, 2010) or hybrid Eulerian-Lagrangian methods (Raad & Bidoae, 2005). Two-dimensional models are not capable of accurately predicting the high-velocity dam break impact (Aureli et al, 2015) but low-velocity flow impacts (Aureli et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…In contrast, we use the Level set method with a Eulerian formulation to calculate the reaction forces and pressures in a flash flood event. Moreover, the former simulation studies by Kleefsman et al (2005) and Cummins et al (2012) are more focused on water profiles, and in our study, we give our attention to impact pressures and forces with the flash flood structural damage scenario in mind. In addition, we take the material properties of the structure into consideration.…”

Section: Introductionmentioning

confidence: 99%

Use of fluid structure interaction technique for flash flood impact assessment of structural components

Kankanamge

Mendis

Ngo

2019

J Flood Risk Management

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Prediction of the initial impact force is a major task associated with flood damage assessment of structures subjected to flash flooding especially due to dam break and levee breach. Investigation of failure modes such as overturning and sliding due to soil scouring or erosion is not relevant if the structure first fails by the massive initial dynamic impact. Therefore, a careful assessment of the initial flood impact is critical for the design of structures and during the flood damage assessment process. In most of the past flood damage studies, total flood load acting on the structures was estimated by maximum velocities and water depths obtained from the two-dimensional hydrodynamic models or the field data. The outcome of these results has shown potential uncertainty in current methods.We present a new approach to calculate the load on structural components impacted by a dam break wave, by modelling the three-dimensional free surface fluid-structure interaction (FSI) using the incompressible computational fluid dynamics (ICFD) techniques. Two experimental datasets available in the literature are used to validate the results. Finally, we conclude that FSI/IFCD method can be used to accurately determine the initial impact force on structural components subjected to flash floods for flood damage assessment. K E Y W O R D S dam break, flash flood, flood damages, fluid-structure interaction (FSI), incompressible computational fluid dynamics (ICFD)

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“…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]. Constructing a numerical wave basin usually requests a large fluid domain to avoid wave reflections from the boundaries, which means that a 3D SPH simulation would typically contains millions of particles.…”

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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Three‐dimensional wave impact on a rigid structure using smoothed particle hydrodynamics

Abstract: Reference #21: Rogers BD, Dalrymple RA, Stansby PK. Simulation of caisson breakwater movement using 2-d SPH.

Cited by 15 publications

References 15 publications

Three-dimensional steep wave impact on a vertical cylinder

Three-dimensional steep wave impact on a vertical cylinder

Use of fluid structure interaction technique for flash flood impact assessment of structural components

A SPH numerical wave basin for modeling wave-structure interactions

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