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
Fluid Flow Simulation Using Particle Method and Its Physics-based Computer Graphics
TL;DR: Numerical results demonstrate the workability and the validity of the present approach through dam-breaking flow problem.
Simulating triggering and evolution of debris-flows with sph
TL;DR: In this paper, a meshless, meshless Lagrangian numerical method, known as smoothed particle hydrodynamics (SPH), is applied to simulate debris-flow initiation and propaga- tion over the slope of a mountain located in the city of Nocera Inferiore (Southern Italy).
Journal ArticleDOI
Experimental research and numerical simulation of moving molten metal pool
TL;DR: In this article, a Moving Particle Semi-implicit (MPS) method is considered as a candidate tool to analyze MCCI phenomena, and large deviations existed in predicting the ablation shape and average temperature of the corium, which was due to the different empirical interfacial models were applied.
Journal ArticleDOI
Progress towards the design and numerical analysis of a 3D microchannel biochip separator
Xiangdong Xue,Silvia Marson,Mayur Patel,Chris Bailey,William O’Neill,David Topham,Robert W. Kay,Marc P.Y. Desmulliez +7 more
TL;DR: In this paper, the authors report the design and numerical analysis of a three-dimensional biochip plasma blood separator using computational fluid dynamics techniques, and discuss the advantages of 3D over 2D separators in increasing separation volume and effectively depleting cell-free layer fluid from the whole cross section circumference.
Journal ArticleDOI
Accuracy analysis of different higher-order Laplacian models of incompressible SPH method
TL;DR: Shobeyri et al. as discussed by the authors examined the accuracy of several higher-order incompressible smoothed particle hydrodynamics (ISPH) Laplacian models and compared with the classic model.
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