Journal ArticleDOI
Numerical analysis of breaking waves using the moving particle semi-implicit method
TLDR
In this paper, a moving particle semi-implicit (MPS) algorithm is used for two-dimensional incompressible non-viscous flow analysis and two types of breaking waves, plunging and spilling breakers, are observed in the calculation results.Abstract:
SUMMARY The numerical method used in this study is the moving particle semi-implicit (MPS) method, which is based on particles and their interactions. The particle number density is implicitly required to be constant to satisfy incompressibility. A semi-implicit algorithm is used for two-dimensional incompressible non-viscous flow analysis. The particles whose particle number densities are below a set point are considered as on the free surface. Grids are not necessary in any calculation steps. It is estimated that most of computation time is used in generation of the list of neighboring particles in a large problem. An algorithm to enhance the computation speed is proposed. The MPS method is applied to numerical simulation of breaking waves on slopes. Two types of breaking waves, plunging and spilling breakers, are observed in the calculation results. The breaker types are classified by using the minimum angular momentum at the wave front. The surf similarity parameter which separates the types agrees well with references. Breaking waves are also calculated with a passively moving float which is modelled by particles. Artificial friction due to the disturbed motion of particles causes errors in the flow velocity distribution which is shown in comparison with the theoretical solution of a cnoidal wave. © 1998 John Wiley & Sons, Ltd.read more
Citations
More filters
Journal ArticleDOI
Numerical Simulation of Solitary Waves Using Smoothed Particle Hydrodynamics Method
TL;DR: In this article, the authors used the smoothed particle hydrodynamics (SPH) method to simulate the split-up of a single solitary wave while it crosses a continental kind of shelf.
Journal ArticleDOI
Fundamental Research on the Effects of Reducing Tsunami Damages of Vessels in Port Due to Mooring System with Floating Pier: - The First Report; on the Effects of Reducing Breaking of Mooring Line and Running on Quay -@@@- 第 1 報 塩釜港の被災事例に基づいた係留索の破断と岸壁乗り上げの低減効果について-
Book ChapterDOI
Inner and Outer Particles Searching Method With Its Applying in SPH Method
TL;DR: In this article, a two-dimensional hydrodynamic model is developed, on the basis of numerical approximation formulations of Smoothed Particle Hydrodynamics (SPH) to NS equation, which can improve the computation efficiency remarkably compared with the traditional DSM method and the Mihai's method.
Deformation and fracture analysis of elastic solids based on a particle method
TL;DR: In this paper, the linear elastodynamics and fracture are simulated by using a Lagrangian particle method, which was first developed to simulate the behavior of incompressible flu- ids by Koshizuka et al.
Journal ArticleDOI
Modelos Lagrangianos para la simulación de fluidos y su aplicación a la hidrodinámica marina
TL;DR: In this paper, the authors describe the semi-implicit particle movement (MPS) method, which is one of the most representative models of the Lagrangian models used in fluid simulation, and compare the advantages and disadvantages of the MPS method based on the particle number density, the velocity divergence and the weakly compressible versions.
References
More filters
Journal ArticleDOI
Moving-Particle Semi-Implicit Method for Fragmentation of Incompressible Fluid
Seiichi Koshizuka,Yoshiaki Oka +1 more
TL;DR: In this paper, a moving-particle semi-implicit (MPS) method for simulating fragmentation of incompressible fluids is presented, where the motion of each particle is calculated through interactions with neighboring particles covered with the kernel function.
Journal ArticleDOI
Breaker type classification on three laboratory beaches
TL;DR: Breaker type, for waves on smooth concrete slopes, depends on beach slope m, wave period T, and either deep-water or breaker height, H 0 or Hb as discussed by the authors.
Related Papers (5)
Moving-Particle Semi-Implicit Method for Fragmentation of Incompressible Fluid
Seiichi Koshizuka,Yoshiaki Oka +1 more
Smoothed particle hydrodynamics: Theory and application to non-spherical stars
R. A. Gingold,Joseph J Monaghan +1 more