Particle methods in ocean and coastal engineering

Luo, Min; Khayyer, Abbas; Lin, Pengzhi

doi:10.1016/j.apor.2021.102734

Cited by 207 publications

(44 citation statements)

References 497 publications

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“…Although extensive literature regarding simulating OEDs using the SPH method was published during the past decades, to the best knowledge of the authors, it still lacks an effort dedicated to providing a detailed review of this field. Note that although several reviews have been focused on the SPH applications towards coastal and ocean engineering (see, e.g., [66,67]), free-surface flows (see, e.g., [68][69][70][71][72]), multiphase flows (see e.g., [73]), FSI problems (see, e.g., [74][75][76][77]), and diverse industrial applications (see, e.g., [78][79][80][81][82][83]), these works paid little attention to OEDs, for which several hydrodynamic problems are quite different from traditional nearshore/offshore structures and thereby deserve energy engineers and SPH practitioners' attention. Therefore, in contrast to the previous reviews, this study aimed at offering the state-of-the-art progress with regard to various advanced SPH techniques in the hydrodynamic predictions of OEDs towards industrial applications, and the attention of the present work is particularly focused on the following topics (see Figure 4 for more details) 1.…”

Section: Computational Efficiencymentioning

confidence: 99%

“…The internal method is also known as the internal wavemaker, which was proposed to add an artificial source term into the continuity/momentum equations to mimic a wavemaker. The superiority of the internal method is avoiding undesired wave reflections from the wave-making boundary [132], whereas it could lead to extra computational costs because of the need of extending the flow domain [67]. For the typical examples of this method using SPH simulations, the readers can refer to [132,133].…”

Section: Wave Generationmentioning

confidence: 99%

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A Review of SPH Techniques for Hydrodynamic Simulations of Ocean Energy Devices

et al. 2022

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This article is dedicated to providing a detailed review concerning the SPH-based hydrodynamic simulations for ocean energy devices (OEDs). Attention is particularly focused on three topics that are tightly related to the concerning field, covering (1) SPH-based numerical fluid tanks, (2) multi-physics SPH techniques towards simulating OEDs, and finally (3) computational efficiency and capacity. In addition, the striking challenges of the SPH method with respect to simulating OEDs are elaborated, and the future prospects of the SPH method for the concerning topics are also provided.

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Section: Computational Efficiencymentioning

confidence: 99%

Section: Wave Generationmentioning

confidence: 99%

A Review of SPH Techniques for Hydrodynamic Simulations of Ocean Energy Devices

et al. 2022

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“…In contrast, mesh-free Lagrangian continuum methods, or simply particle methods, discretize the continuum using moving particles without any connectivity (Figure 1-c). This feature of particle methods introduces them as reliable numerical approaches for handling interfacial deformations, and hence, suitable for highly dynamic granular flows [16,17,18]. The Material Point Method (MPM) [19], the Moving Particle Semiimplicit (MPS) method [20], and the Smoothed Particles Hydrodynamics (SPH) method [21] are some of the most widely adopted continuum particle methods.…”

Section: Introductionmentioning

confidence: 99%

Fluid-driven granular dynamics through a consistent multi-resolution particle method

Jandaghian¹,

Shakibaeinia²

2022

Preprint

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Granular dynamics driven by fluid flow is ubiquitous in many industrial and natural processes, such as fluvial and coastal sediment transport. Yet, their complex multiphysics nature challenges the accuracy and efficiency of numerical models.Here, we study the dynamics of rapid fluid-driven granular erosion through a mesh-free particle method based on the enhanced weakly-compressible Moving Particle Semi-implicit (MPS) method. To that end, we develop and validate a new multi-resolution multiphase MPS formulation for the consistent and conservative form of the governing equations, including particle stabilization techniques. First, we discuss the numerical accuracy and convergence of the proposed approximation operators through two numerical benchmark cases: the multi-viscosity Poiseuille flow and the multi-density hydrostatic pressure. Then, coupling the developed model with a generalized rheology equation, we investigate the water dam-break waves over movable beds. The particle convergence study confirms that the proposed multi-resolution formulation predicts the analytical solutions with acceptable accuracy and order of convergence. Validating the multiphase granular flow reveals that the mechanical behavior of this fluid-driven problem is highly sensitive to the water-sediment density ratio; the bed with lighter grains experiences extreme erosion and interface deformations. For the bed with a heavier material but different geometrical setups, the surge speed and the transport layer thickness remain almost identical (away from the gate). Furthermore, while the multi-resolution model accurately estimates the global sediment dynamics, the single-resolution model underestimates the flow evolution.

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“…Thus, it has been attracting much research interest from the coastal and ocean engineering community. Typical applications are the wave/currentstructure interaction [40][41][42], wave deformation over topography [43][44][45], liquid sloshing [46][47][48], renewable energy utilization [49][50][51] and sediment dynamics [52][53][54], and the reader is referred to the review papers [55][56][57] to see more examples. Herein, the SPH method is applied to investigate the pontoon-airbag double-row floating breakwater due to the feature of the physical problem.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on the Hydrodynamic Characteristics of a Double-Row Floating Breakwater Composed of a Pontoon and an Airbag

Cheng

Liu

Zhang

et al. 2021

JMSE

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By adding a cylindrical airbag on the leeward side of a cuboid pontoon, a new-type double-row floating breakwater is designed to improve the wave attenuation performance, and its hydrodynamic characteristics are studied through numerical simulations. First, based on the smoothed particle hydrodynamics (SPH) method, a numerical model used to simulate the interaction between waves and moored floating bodies is built. The fluid motion is governed by the Navier–Stokes equations. The motion of the floating body is computed according to Newton’s second law. The modified dynamic boundary condition is employed to treat the solid boundary. The lumped-mass method is adopted to implement the mooring system. Then, two physical model experiments on waves interaction with cuboid and dual cylindrical floating pontoons are reproduced. By comparing the experimental and numerical wave transmission coefficients, wave reflection coefficients, response amplitude operators and mooring force, the reliability of the numerical model is validated. Finally, the validated numerical model is applied to study the influence of separation distance and wave parameters on the hydrodynamic characteristics of the double-row floating breakwater. The results indicate that the optimal separation distance between pontoon and airbag is 0.75 times the wavelength. At such separation distance and within the concerned 1–4 m wave heights and 4–7 s wave periods, the pontoon-airbag system presents better wave attenuation performance than a single pontoon. This improvement weakens as wave height increases while it strengthens as the wave period increases. In addition, the double-row floating breakwater is more effective in a high-wave regime than in a low-wave regime. In the case of short waves, attention should be paid to the stability and mooring reliability of the seaward pontoon, while in the case of long waves, care needs to be taken of the leeward airbag.

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Particle methods in ocean and coastal engineering

Cited by 207 publications

References 497 publications

A Review of SPH Techniques for Hydrodynamic Simulations of Ocean Energy Devices

A Review of SPH Techniques for Hydrodynamic Simulations of Ocean Energy Devices

Fluid-driven granular dynamics through a consistent multi-resolution particle method

Numerical Study on the Hydrodynamic Characteristics of a Double-Row Floating Breakwater Composed of a Pontoon and an Airbag

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