Wave force on protected submarine pipelines over porous and impermeable beds using SPH numerical model
TL;DR: In this article, a numerical model based on WCSPH method is utilized to simulate wave propagation over a pipeline and a hybrid approach is introduced to absorb outgoing waves based on gradual decrease of fluid velocity in an absorbing layer and using sloping beds simultaneously.
About: This article is published in Applied Ocean Research.The article was published on 2020-05-01. It has received 15 citations till now. The article focuses on the topics: Wave propagation & Submarine pipeline.
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TL;DR: In this paper, a review of particle methods in hydrodynamics-related problems in ocean and coastal engineering is presented, where the problems are placed into three categories according to their physical characteristics, namely, wave hydrodynamic and corresponding mass transport, wave-structure interaction, and wave-current-sediment interaction.
131 citations
TL;DR: In this article, the improved smoothed particle hydrodynamics (SPH) method with numerical diffusive terms, referred to as δ-SPH, has been widely applied into the studies of engineering problems, especially in the fields of ocean and coastal engineering.
42 citations
TL;DR: In this paper, a numerical model based on SPH technique is developed to compare the hydraulic performance of a non-reshaped with a reshaped breakwater to validate this model, wave transmissions from a permeable submerged breakwater as well as wave penetration through a reshaping breakwater are compared with the recorded data in available experimental studies.
15 citations
TL;DR: In this paper, a case study on the failure pressure of irregular-shaped defect based on finite element model and experimental tests is presented, and the effect of the length, depth and the longitudinal spacing of deep defects on the defect's failure pressure is analyzed.
12 citations
TL;DR: The paper brings out the advantages and implementation issues of MLPG, the relationship with ISPH/MPS methods and some concepts that are adopted in both formulations, and the key challenges and future directions in the development of the numerical method.
12 citations
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TL;DR: In this paper, the SPH (smoothed particle hydrodynamics) method is extended to deal with free surface incompressible flows, and examples are given of its application to a breaking dam, a bore, the simulation of a wave maker, and the propagation of waves towards a beach.
2,889 citations
TL;DR: A new class of positive definite and compactly supported radial functions which consist of a univariate polynomial within their support is constructed, it is proved that they are of minimal degree and unique up to a constant factor.
Abstract: We construct a new class of positive definite and compactly supported radial functions which consist of a univariate polynomial within their support. For given smoothness and space dimension it is proved that they are of minimal degree and unique up to a constant factor. Finally, we establish connections between already known functions of this kind.
2,495 citations
TL;DR: A simple procedure is proposed to improve the computation of the pressure distribution in the dynamics of liquids, based on the use of a density diffusion term in the equation for the mass conservation.
421 citations
TL;DR: In this article, the authors describe the foundation and properties of the so-called dynamic boundary particles (DBPs), which share the same equations of continuity and state as the moving particles placed inside the domain, although their positions and velocities remain unaltered in time.
Abstract: Smoothed Particle Hydrodynamics is a purely Lagrangian method that can be applied to a wide variety of fields. The foundation and properties of the so called dynamic boundary particles (DBPs) are described in this paper. These boundary particles share the same equations of continuity and state as the moving particles placed inside the domain, although their positions and velocities remain unaltered in time or are externally prescribed. Theoretical and numerical calculations were carried out to study the collision between a moving particle and a boundary particle. The boundaries were observed to behave in an elastic manner in absence of viscosity. They allow the fluid particles to approach till a critical distance depending on the energy of the incident particle. In addition, a dam break confined in a box was used to check the validity of the approach. The good agreement between experiments and numerical results shows the reliability of DBPs. Keyword: Meshfree methods, SPH, smoothed particle hydrodynamics, boundary conditions
351 citations
TL;DR: In this paper, a new way of implementing radiation boundary conditions in finite difference schemes is reported, where instead of prescribing the incident field at the model boundary, waves are generated inside the boundary.
350 citations