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
MPS-Based Model to Solve One-Dimensional Shallow Water Equations
Payam Sarkhosh,Yee-Chung Jin +1 more
Journal ArticleDOI
Numerical visualisation of physical values during human swallowing using a three-dimensional swallowing simulator ‘Swallow Vision®’ based on the moving particle simulation method
Tetsu Kamiya,Yoshio Toyama,Keigo Hanyu,Megumi Takai,Takahiro Kikuchi,Yukihiro Michiwaki,Seiichi Koshizuka +6 more
TL;DR: To visualise changes in physical values of food bolus during swallowing to correlate the movement of human organs and bolus flow configuration using Swallow Vision®, a three-dimensional human swallowing simulator, is helpful for understanding swallowing biomechanics, as well as for identifying appropriate foods for people with swallowing difficulties or dysphagia.
Journal ArticleDOI
Trap performance analysis of woody debris capturing structure by distinct element method using cylindrical element
Journal ArticleDOI
An Investigation into Neighbouring Search Techniques in Meshfree Particle Methods: An Evaluation of the Neighbour Lists and the Direct Search
TL;DR: In this article, the authors investigated the computational efficiency of the linked list technique through comparison with results of simulations of the direct search (the simplest neighbour search technique), and they concluded that the implementation of a optimisation technique for computational time saving is necessary.
Journal ArticleDOI
A fluid simulation system based on the MPS method
Andre Luiz Buarque Vieira-e-Silva,Caio Jose dos Santos Brito,Francisco Simões,Francisco Simões,Veronica Teichrieb +4 more
TL;DR: A numerically stable and parallelized system that benefits from advances in the literature and parallel computing to obtain an adaptable MPS method that can simulate liquids using different approaches, such as two ways to calculate the particles’ pressure, turbulent flow, and multiphase interaction.
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