Friday, 14 November 

ABSTRACT
In this course we review recent advances in flow simulations
using particles with a focus on developing a bridge
fostering an interdisciplinary scientific exchange between
the CG and the CFD communities. The course will describe
advances in particle methods in a comparative, case study
driven framework. In this framework we will address for
example visual realism of liquid simulations as related to
the accuracy of enforcing incompressibility constraints in
Smooth Particle Hydrodynamics (SPH) and Vortex Methods (VM).
We will discuss the role of advantages and drawbacks for
particle simulations when using remeshing, we will present
techniques for the effective handling of fluids interacting
with solids and free surfaces and in turn the use of
Computer Graphics algorithms and hardware to accelerate flow
simulations of relevance to the CFD community.
Key words : Particle Methods, Level Sets, Fluids, GPUs

Presenters
Petros Koumoutsakos, Professor
ETH Zurich, Switzerland
Georges-Henri Cottet, Professor
Laboratoire Jean Kuntzmann, CNRS, Grenoble, France
Diego Rossinelli, PhD student
ETH Zurich, Switzerland

Extended Summary
The simulation of fluid flows using particles is becoming
increasingly popular in Computer Graphics (CG). The
grid-free character of particles, the  flexibility in
handling complex flow configurations and the possibility to
obtain visually realistic results with a small number of
computational elements are some of the main reasons for the
success of these methods. In the Computational Fluid
Dynamics (CFD) community, the realization that by
periodically regularizing the particle locations can lead to
highly accurate flow simulations, without detracting from
the adaptivity and robustness of the method has led in turn
to a renaissance in flow simulations using particles. 

In this course we review recent advances in flow simulations
using particles with a focus on developing a bridge
fostering an interdisciplinary scientific exchange between
the CG and the CFD communities. The course will describe
advances in particle methods in a comparative, case study
driven framework. In this framework we will address for
example visual realism of liquid simulations as related to
the accuracy of enforcing incompressibility constraints in
Smooth Particle Hydrodynamics (SPH) and Vortex Methods (VM).
We will discuss the role of advantages and drawbacks for
particle simulations when using remeshing, we will present
techniques for the effective handling of fluids interacting
with solids and free surfaces and in turn the use of
Computer Graphics algorithms and hardware to accelerate flow
simulations of relevance to the CFD community.

The course will be accessible to researchers in computer
graphics with minimal background in Flow physics. At the
same time it will be accessible to researchers in CFD with
minimal background in physics based simulations in computer
graphics. We will provide the necessary CFD background of
particle simulations dealing with issues such as
incompressibility, enforcement of free-surface and wall
boundary conditions. The course will provide a concise
description of the requirements for accurate simulation of
fluid flows and their extension to visually realistic
simulations of flows pertinent to computer graphics
 
Prerequisites
Familiarity with fundamentals of fluid dynamics and physical
simulation of fluids is recommended but not mandatory.
Overview of numerical integral quadrature, interpolation,
differential equations and wavelets would be a plus.

Target Audience
Target audience includes researchers and interested in the
simulation of complex fluid flows for Computer Graphics and
CFD applications.

Course fee: CHF 750.--