Case9370 - TU Darmstadt - DFSPH

TU Darmstadt - DFSPH by TU Darmstadt

Prof. Dr. Jan Bender and his PhD student Dan Koschier, both at the Technische Universität Darmstadt in Germany, published a paper called Divergence-Free Smoothed Particle Hydrodynamics, In Proceedings of ACM SIGGRAPH / EUROGRAPHICS Symposium on Computer Animation (SCA), 2015 (also see Abstract below).

For their teaser video they used emPolygonizer5 and Maya to mesh and render their particle simulations.

Further works, videos and papers from Prof. Dr. Jan Bender and his team can be found here at Interactive Computer Graphics.



In this paper we introduce an efficient and stable implicit SPH method for the physically-based simulation of incompressible fluids. In the area of computer graphics the most efficient SPH approaches focus solely on the correction of the density error to prevent volume compression. However, the continuity equation for incompressible flow also demands a divergence-free velocity field which is neglected by most methods. Although a few methods consider velocity divergence, they are either slow or have a perceivable density fluctuation.

Our novel method uses an efficient combination of two pressure solvers which enforce low volume compression (below 0.01%) and a divergence-free velocity field. This can be seen as enforcing incompressibility both on position level and velocity level. The first part is essential for realistic physical behavior while the divergence-free state increases the stability significantly and reduces the number of solver iterations. Moreover, it allows larger time steps which yields a considerable performance gain since particle neighborhoods have to be updated less frequently. Therefore, our divergence-free SPH (DFSPH) approach is significantly faster and more stable than current state-of-the-art SPH methods for incompressible fluids. We demonstrate this in simulations with millions of fast moving particles.

A Micropolar Material Model for Turbulent SPH Fluids
Density Maps
Density Maps for Improved SPH Boundary Handling
Smoooth. (The swim)
Beautiful spot with 'fluidy hair' for the company Klarna
ZipRecruiter - Right Resume
Ad featuring nice flocks of paper sheets
Playmobil - Pirates Trailer
VFX: fire, smoke, foam.
Lucozade Sport Conditions Zone - The Heat
Commercial Spot for the World Cup
The Cuckoo-Clock Heart
The official movie trailer of "Jack et la mécanique du cœur"
Forcefield Look Dev
Compilation of R&D and Look Development
Plexus Production Opener
Art meets Logo Animation
Playmobil - Drachenherzen
VFX: fire, smoke, debris, etc.
Glasser Spon Case Study
Glasser's 2013 Concert Tour.
Project Kronos
Documentary short film set in the not too distant future.
Subaru - Birth of a Legacy
Commercial by INFECTED
Nissan Pathfinder 2013
Nissan - Wouldn't It Be Cool
MTV EMA 2011
Jules Vernes would be proud… or turn in his grave.
Follow Me
The fifth official music video of electro artist Krause.
Yu Jaeho emFluid4 Liquid
Test rendering of a demo scene using Arnold and SItoA.