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
A mesh-free method boundary condition technique in open channel flow simulation
Lei Fu,Yee-Chung Jin +1 more
TL;DR: In this article, a new approach based on assigning velocity to ghost particles next to the solid boundary is developed to optimize the efficiency and accuracy of the mesh-free method in simulating open channel flow.
Journal ArticleDOI
Numerical modeling on the discharged fluid flow from a glass melter by a Lagrangian approach
TL;DR: In this paper, a new Lagrangian approach was proposed to simulate the discharged glass flow in a joule-heated glass melter, which accurately simulates the molten glass flow.
Journal ArticleDOI
Numerical analysis of freezing controlled penetration behavior of the molten core debris in an instrument tube with MPS
Ronghua Chen,Yoshiaki Oka +1 more
TL;DR: In this paper, the surface tension model based on the interparticle potential force was incorporated in the MPS method to track the melt leading front more accurately, and the simulation results indicated that the typical melt penetration and solidification behavior in the instrument tube was successfully revealed by MPS.
Journal ArticleDOI
A consistent Moving Particle System Simulation method: Applications to parabolic/hyperbolic heat conduction type problems
TL;DR: In this paper, a consistent MPS (Moving Particle System Semi-implicit/moving particle system simulation) method is established emanating from Taylor Expansion and Gauss's Theorem.
Journal ArticleDOI
Modeling free-surface flows of granular column collapses using a mesh-free method
Tibing Xu,Yee-Chung Jin +1 more
TL;DR: In this article, a moving particle semi-implicit method (MPS) is employed to calculate the effective viscosity and shear stress in granular flows in the numerical method.
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