SC is the International Conference for
 High Performnance Computing, Networking, Storage and Analysis

SCHEDULE: NOV 13-19, 2010

Direct Numerical Simulation of Particulate Flows on 294912 Processor Cores

SESSION: Multiple Scale Particle-based Algorithms

EVENT TYPE: Paper

TIME: 4:30PM - 5:00PM

SESSION CHAIR: Andrew M Canning

AUTHOR(S):Jan Götz, Klaus Iglberger, Markus Stürmer, Ulrich Rüde

ROOM:391-392

ABSTRACT:
This paper describes computational models for particle laden flows based on a fully resolved fluid structure interaction. The flow simulation uses the Lattice Boltzmann method while the particles are handled by a rigid-body dynamics algorithm. The particles can have individual non-spherical shapes, creating the need for a non-trivial collision detection and special contact models. An explicit coupling algorithm transfers momenta from the fluid to the particles in each time step while the particles impose moving boundaries for the flow solver. All algorithms and their interaction are fully parallelized. Scaling experiments and a careful performance analysis are presented for up to 294912 processor cores of a Blue Gene/P system. The largest simulations involve 264 million particles and 150 billion fluid cells. We will present computational experiments for the segregation of suspensions of particles of different density, as an example of the many industrial applications that are enabled by this new methodology.

Chair/Author Details:

Andrew M Canning (Chair) - Lawrence Berkeley National Laboratory

Jan Götz - University of Erlangen-Nuremberg

Klaus Iglberger - University of Erlangen-Nuremberg

Markus Stürmer - University of Erlangen-Nuremberg

Ulrich Rüde - University of Erlangen-Nuremberg

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The full paper can be found in the ACM Digital Library and IEEE Computer Society

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