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
Behavior emergence of virtual creature that can live in different environments
TL;DR: A basic physics law and fluid influences are implemented with a virtual environment and the model, which is evolved in a different environment, obtains effective different moving behaviors, walking and swimming in each environment.
Journal ArticleDOI
Review of the State-of-Art of MPS Method in Ocean Engineering
TL;DR: The Moving Particle Semi-Implicit (MPS) method as mentioned in this paper is an important branch of meshless method, which is mainly divided into the Smoothed Particle Hydrodynamics (SPH) and moving particle semi-implicit (mPS) methods.
Numerical analysis on deformation of wave dissipating blocks by gpu-accelerated dem computation
TL;DR: In this paper, a GPGPU with OpenCL is introduced to accelerate DEM computation in a breakwater covered with wave dissipating blocks and a wall of caisson can be broken due to high waves.
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