A unified particle model for fluid–solid interactions

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. Copyright © 2007 John Wiley & Sons, Ltd.

[1]  Markus H. Gross,et al.  Particle-based fluid-fluid interaction , 2005, SCA '05.

[2]  Ronald Fedkiw,et al.  Coupling water and smoke to thin deformable and rigid shells , 2005, SIGGRAPH '05.

[3]  James F. O'Brien,et al.  Graphical modeling and animation of ductile fracture , 2002, SIGGRAPH '02.

[4]  Markus H. Gross,et al.  Eurographics Symposium on Point-based Graphics (2005) a Unified Lagrangian Approach to Solid-fluid Animation , 2022 .

[5]  James F. O'Brien,et al.  A method for animating viscoelastic fluids , 2004, SIGGRAPH 2004.

[6]  James F. O'Brien,et al.  A method for animating viscoelastic fluids , 2004, ACM Trans. Graph..

[7]  Robert Bridson,et al.  Animating sand as a fluid , 2005, ACM Trans. Graph..

[8]  D. Baraff.  Physically Based Modeling Rigid Body Simulation , 1992 .

[9]  Ronald Fedkiw,et al.  Multiple interacting liquids , 2006, ACM Trans. Graph..

[10]  Eugene Fiume,et al.  Depicting fire and other gaseous phenomena using diffusion processes , 1995, SIGGRAPH.

[11]  Mathieu Desbrun,et al.  Animation of Deformable Models Using Implicit Surfaces , 1997, IEEE Trans. Vis. Comput. Graph..

[12]  Greg Turk,et al.  Rigid fluid: animating the interplay between rigid bodies and fluid , 2004, ACM Trans. Graph..

[13]  Andrew Nealen,et al.  Physically Based Deformable Models in Computer Graphics , 2006, Comput. Graph. Forum.

[14]  Jean-Michel Dischler,et al.  Simulating Fluid-Solid Interaction , 2003, Graphics Interface.

[15]  Hans-Peter Seidel,et al.  Interactive ray tracing of point-based models , 2005, Proceedings Eurographics/IEEE VGTC Symposium Point-Based Graphics, 2005..

[16]  Markus H. Gross,et al.  Versatile Virtual Materials Using Implicit Connectivity , 2006, PBG@SIGGRAPH.

[17]  Marie-Paule Cani,et al.  Animating Lava Flows , 1999, Graphics Interface.

[18]  Ross T. Whitaker,et al.  Particle‐Based Simulation of Fluids , 2003, Comput. Graph. Forum.

[19]  Marc Alexa,et al.  Point based animation of elastic, plastic and melting objects , 2004, SCA '04.

[20]  Mathieu Desbrun,et al.  Smoothed particles: a new paradigm for animating highly deformable bodies , 1996 .

[21]  Ronald Fedkiw,et al.  Melting and burning solids into liquids and gases , 2006, IEEE Transactions on Visualization and Computer Graphics.

[22]  J. Monaghan,et al.  Smoothed particle hydrodynamics: Theory and application to non-spherical stars , 1977 .

[23]  John Platt,et al.  Heating and melting deformable models (from goop to glop) , 1989 .

[24]  James F. O'Brien,et al.  Simultaneous coupling of fluids and deformable bodies , 2006, SCA '06.

[25]  J. Monaghan.  Smoothed particle hydrodynamics , 2005 .

[26]  Jessica K. Hodgins,et al.  Graphical modeling and animation of ductile fracture , 2002, SIGGRAPH.

[27]  Markus H. Gross,et al.  Particle-based fluid simulation for interactive applications , 2003, SCA '03.

[28]  Markus H. Gross,et al.  Interaction of fluids with deformable solids , 2004, Comput. Animat. Virtual Worlds.

[29]  Klaus Mueller,et al.  Melting and flowing in multiphase environment , 2006, Comput. Graph..

[30]  Greg Turk,et al.  Melting and flowing , 2002, SCA '02.