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A unified particle model for fluid-solid interactions


Solenthaler, B; Schläfli, J; Pajarola, R (2007). A unified particle model for fluid-solid interactions. Computer Animation and Virtual Worlds, 18(1):69-82.

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.

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.

Citations

74 citations in Web of Science®
131 citations in Scopus®
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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:03 Faculty of Economics > Department of Informatics
Dewey Decimal Classification:000 Computer science, knowledge & systems
Date:2007
Deposited On:24 Mar 2011 15:25
Last Modified:05 Apr 2016 14:53
Publisher:Wiley-Blackwell
ISSN:1546-4261
Publisher DOI:https://doi.org/10.1002/cav.162

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