Journal ArticleDOI
A unified particle model for fluid–solid interactions
TLDR
This work significantly changed a prior elastic particle model to achieve a flexible model for melting and solidification, and proposes a surface reconstruction technique based on considering the movement of the center of mass to reduce rendering errors in concave regions.Abstract:
We present a new method for the simulation of melting and solidification in a unified particle model. Our technique uses the Smoothed Particle Hydrodynamics (SPH) method for the simulation of liquids, deformable as well as rigid objects, which eliminates the need to define an interface for coupling different models. Using this approach, it is possible to simulate fluids and solids by only changing the attribute values of the underlying particles. We significantly changed a prior elastic particle model to achieve a flexible model for melting and solidification. By using an SPH approach and considering a new definition of a local reference shape, the simulation of merging and splitting of different objects, as may be caused by phase change processes, is made possible. In order to keep the system stable even in regions represented by a sparse set of particles we use a special kernel function for solidification processes. Additionally, we propose a surface reconstruction technique based on considering the movement of the center of mass to reduce rendering errors in concave regions. The results demonstrate new interaction effects concerning the melting and solidification of material, even while being surrounded by liquids.read more
Citations
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Proceedings ArticleDOI
Weakly compressible SPH for free surface flows
Markus Becker,Matthias Teschner +1 more
TL;DR: A weakly compressible form of the Smoothed Particle Hydrodynamics method for fluid flow based on the Tait equation is presented and an improved surface tension model that is particularly appropriate for single-phase free-surface flows is discussed.
Journal ArticleDOI
Predictive-corrective incompressible SPH
TL;DR: This work presents a novel, incompressible fluid simulation method based on the Lagrangian Smoothed Particle Hydrodynamics model that clearly outperforms the commonly used weakly compressible SPH (WCSPH) model by more than an order of magnitude while the computations are in good agreement with the WCSPH results.
Journal ArticleDOI
Versatile rigid-fluid coupling for incompressible SPH
TL;DR: This work proposes a momentum-conserving two-way coupling method of SPH fluids and arbitrary rigid objects based on hydrodynamic forces that samples the surface of rigid bodies with boundary particles that interact with the fluid, preventing deficiency issues and both spatial and temporal discontinuities.
Journal ArticleDOI
Implicit Incompressible SPH
TL;DR: A novel formulation of the projection method for Smoothed Particle Hydrodynamics that combines a symmetric SPH pressure force and an SPH discretization of the continuity equation to obtain a discretized form of the pressure Poisson equation (PPE).
Proceedings ArticleDOI
SPH Fluids in Computer Graphics
TL;DR: This state-of-the-art report summarizes SPH research within the graphics community and shows how complex scenes with millions of sampling points, oneand two-way coupled rigid and elastic solids, multiple phases and additional features such as foam or air bubbles can be computed at reasonable expense.
References
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Journal ArticleDOI
Smoothed particle hydrodynamics: Theory and application to non-spherical stars
R. A. Gingold,Joseph J Monaghan +1 more
Journal ArticleDOI
Smoothed particle hydrodynamics
TL;DR: In this article, the theory and application of Smoothed particle hydrodynamics (SPH) since its inception in 1977 are discussed, focusing on the strengths and weaknesses, the analogy with particle dynamics and the numerous areas where SPH has been successfully applied.
Proceedings ArticleDOI
Particle-based fluid simulation for interactive applications
TL;DR: This paper proposes an interactive method based on Smoothed Particle Hydrodynamics (SPH) to simulate fluids with free surfaces and proposes methods to track and visualize the free surface using point splatting and marching cubes-based surface reconstruction.
Journal ArticleDOI
Physically Based Deformable Models in Computer Graphics
TL;DR: This paper presents the most significant contributions of the past decade, which produce such impressive and perceivably realistic animations and simulations: finite element/difference/volume methods, mass‐spring systems, mesh‐free methods, coupled particle systems and reduced deformable models‐based on modal analysis.
Journal ArticleDOI
Animating sand as a fluid
Yongning Zhu,Robert Bridson +1 more
TL;DR: In this article, a physics-based simulation method for animating sand is presented, which abstracts away the individual grains and allows for efficiently scaling up to large volumes of sand, by modeling the sand as a continuum.