This paper presents a survey of Smoothed Particle Hydrodynamics (SPH) and its use in computational fluid dynamics. As a truly mesh-free particle method based upon the Lagrangian formulation, SPH has been applied to a variety of different areas in science, computer graphics and engineering. It has been established as a popular technique for fluid based simulations, and has been extended to succe...

In this paper we discuss the treatment of discontinuities in Smoothed Particle Hydrodynamics (SPH) simulations. In particular we discuss the difference between integral and differential representations of the fluid equations in an SPH context and how this relates to the formulation of dissipative terms for the capture of shocks and other discontinuities. This has important implications for many...

We introduce a new computational method for embedding Lagrangian sink particles into an Eulerian calculation. Simulations of gravitational collapse or accretion generally produce regions whose density greatly exceeds the mean density in the simulation. These dense regions require extremely small time steps to maintain numerical stability. Smoothed particle hydrodynamics (SPH) codes approach thi...

This paper used the smoothed particle hydrodynamics (SPH) method to construct a three-dimensional mathematical model of selective laser melting (SLM) process 304 L austenitic stainless steel. Important driving force models for melt pool in SLM were developed, including surface tension model, boundary normal-modified wetting effect Marangoni shear and recoil pressure model. Meanwhile, virtual pr...

We compare the statistical properties of bright galaxies found in two different models of galaxy formation — the semi-analytic model of Cole et al. (1999) and the smoothed particle hydrodynamics (SPH) simulations of Pearce et al. (1999) — in cold dark matter universes. These two techniques model gas processes very differently: by approximate, analytic methods in the case of semi-analytic models...

In this paper, we introduce a novel meshfree framework for animating free surface viscous liquids with jet buckling effects, such as coiling and folding. Our method is based on Smoothed Particle Hydrodynamics (SPH) fluids and allows more realistic and complex viscous behaviors than the previous SPH frameworks in computer animation literature. The viscous liquid is modeled by a non-Newtonian flu...

Starting from the single graphics processing unit (GPU) version of the Smoothed Particle Hydrodynamics (SPH) code DualSPHysics, a multi-GPU SPH program is developed for free-surface flows. The approach is based on a spatial decomposition technique, whereby different portions (sub-domains) of the physical system under study are assigned to different GPUs. Communication between devices is achieve...

The Support Architecture for Large-Scale Subsurface Analysis (SALSSA) provides an extensible framework, sophisticated graphical user interface (GUI), and underlying data management system that simplifies the process of running subsurface models, tracking provenance information, and analyzing the model results. The SALSSA software framework is currently being applied to validating the Smoothed P...

We propose an approach to simulating and rendering physically based fluid effects in a VFX production environment using a client/server architecture that is practical for distributed simulation resources and that can be seamlessly integrated into commercial 3D animation packages. The fluid simulation implements smoothed particle hydrodynamics (SPH). We extend the concept of surface particles by...

Abstract While the application of Smoothed Particle Hydrodynamics (SPH) method for modeling welding processes has become increasingly popular in recent years, little is yet known about quantitative predictive capability this method. We propose a novel SPH model simulation tungsten inert gas (TIG) spot process and conduct thorough comparison between our implementation two finite element (FEM)-ba...