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This paper describes a novel approach to neighbour-finding in Smoothed Particle Hydrodynamics (SPH) simulations with large dynamic range in smoothing length. This approach is based on hierarchical cell decompositions, sorted interactions,…

天体物理仪器与方法 · 物理学 2013-09-17 Pedro Gonnet , Matthieu Schaller , Tom Theuns , Aidan B. G. Chalk

This paper is focused on the question of simulation and visualiza- tion of 3D gel and paste dynamic effects. In a first part, we introduce a 3D physically based particle (or mass-interaction) model, with a small number of masses and few…

图形学 · 计算机科学 2010-05-31 Claire Guilbaud , Annie Luciani , Nicolas Castagné

The risk posed by tsunami waves is currently modelled over bare-earth representations by tsunami models. The complex flows around buildings and structures are crucial to represent the true state of the tsunami wave elevation, speed and…

流体动力学 · 物理学 2025-04-15 Jack Dignan , Joseph O'Connor , Serge Guillas

Since its inception, the full Lagrangian meshless smoothed particle hydrodynamics (SPH) method has experienced a tremendous enhancement in methodology and impacted a range of multi-physics applications in science and engineering. The paper…

计算物理 · 物理学 2024-05-24 Chi Zhang , Yujie Zhu , Dong Wu , Xiangyu Hu

We describe a simple method for simulating the dynamics of small grains in a dusty gas, relevant to micron-sized grains in the interstellar medium and grains of centimetre size and smaller in protoplanetary discs. The method involves…

天体物理仪器与方法 · 物理学 2015-09-11 Daniel J. Price , Guillaume Laibe

This paper proposes a new data-driven approach to model detailed splashes for liquid simulations with neural networks. Our model learns to generate small-scale splash detail for the fluid-implicit-particle method using training data…

图形学 · 计算机科学 2018-06-27 Kiwon Um , Xiangyu Hu , Nils Thuerey

A three-dimensional SPH computational framework is presented for modeling fluid-structure interactions with structural deformation and failure. We combine weakly compressible SPH with a pseudo-spring-based SPH solver to capture the fluid…

计算工程、金融与科学 · 计算机科学 2025-07-16 Vishabjeet Singh , Chong Peng , Md Rushdie Ibne Islam

We present a novel and fast application to generate glass-like initial conditions for Lagrangian hydrodynamic schemes (e.g. Smoothed Particle Hydrodynamics (SPH)) following arbitrary density models based on weighted Voronoi tessellations…

天体物理仪器与方法 · 物理学 2019-08-02 Alexander Arth , Julius Donnert , Ulrich Steinwandel , Ludwig Böss , Timo Halbesma , Martin Pütz , David Hubber , Klaus Dolag

A major issue in Smoothed Particle Hydrodynamics (SPH) approaches is the numerical dissipation during the projection process, especially under coarse discretizations. High-frequency details, such as turbulence and vortices, are smoothed…

图形学 · 计算机科学 2021-09-21 Sinuo Liu , Xiaokun Wang , Xiaojuan Ban , Yanrui Xu , Jing Zhou , Jiří Kosinka , Alexandru C. Telea

We report first results of an implementation of a chemical model in a cosmological code, based on the Smoothed Particle Hydrodynamics (SPH) technique. We show that chemical SPH simulations are a promising tool to provide clues for the…

天体物理学 · 物理学 2007-05-23 S. A. Cora , M. B. Mosconi , P. B. Tissera , D. G. Lambas

In this paper we present solutions to three short comings of Smoothed Particles Hydrodynamics (SPH) encountered in previous work when applying it to Giant Impacts. First we introduce a novel method to obtain accurate SPH representations of…

地球与行星天体物理 · 物理学 2017-03-29 Christian Reinhardt , Joachim Stadel

We present a hydrodynamic simulation system using the GPU compute shaders of DirectX for simulating virtual agent behaviors and navigation inside a smoothed particle hydrodynamical (SPH) fluid environment with real-time water mesh surface…

计算物理 · 物理学 2023-12-22 Xi Liu , Gizem Kayar , Ken Perlin

In this paper, an SPH method based on the SPH-ALE formulation is used for modelling two-phase flows with large density ratios and realistic sound speeds. The SPH scheme is further improved to circumvent the tensile instability that may…

流体动力学 · 物理学 2020-03-24 Ashkan Rafiee , Denys Dutykh , Frédéric Dias

The axisymmetric form of the hydrodynamic equations within the smoothed particle hydrodynamics (SPH) formalism is presented and checked using idealized scenarios taken from astrophysics (free fall collapse, implosion and further pulsation…

天体物理学 · 物理学 2009-11-13 D. Garcia-Senz , A. Relano , R. M. Cabezon , E. Bravo

In this paper we describe a method for modeling the dynamic behavior of splashing fluids. The model simulates the behavior of a fluid when objects impact or float on its surface. The forces generated by the objects create waves and splashes…

图形学 · 计算机科学 2023-02-14 James F. O'Brien , Jessica K. Hodgins

In this paper we test a special-relativistic formulation of Smoothed Particle Hydrodynamics (SPH) that has been derived from the Lagrangian of an ideal fluid. Apart from its symmetry in the particle indices, the new formulation differs from…

天体物理仪器与方法 · 物理学 2010-05-12 S. Rosswog

We review existing SPH setup methods and outline their advantages, limitations and drawbacks. We present a new method for constructing initial conditions for smoothed particle hydrodynamics (SPH) simulations, which may also be of interest…

天体物理仪器与方法 · 物理学 2015-11-17 Steven Diehl , Gabriel Rockefeller , Christopher L. Fryer , David Riethmiller , Thomas S. Statler

A new method for the inclusion of ionizing radiation from uniform radiation fields into 3D Smoothed Particle Hydrodynamics (SPHI) simulations is presented. We calculate the optical depth for the Lyman continuum radiation from the source…

天体物理学 · 物理学 2009-10-31 O. Kessel-Deynet , A. Burkert

We present a 'two-fluid' implementation of dust in smoothed particle hydrodynamics (SPH) in the test particle limit. The scheme is able to handle both short and long stopping times and reproduces the short friction time limit, which is not…

地球与行星天体物理 · 物理学 2015-08-19 Richard A. Booth , Debora Sijacki , Cathie J. Clarke

First, a meshless simulation method is presented for multiphase fluid-particle flows with a two-way coupled Smoothed Particle Hydrodynamics (SPH) for the fluid and the Discrete Element Method (DEM) for the solid phase. The unresolved fluid…

流体动力学 · 物理学 2014-02-28 Martin Robinson , Stefan Luding , Marco Ramaioli