Institute for Computational Physics

Physics on High Performance Computers

Pfaffenwaldring 27, D-70569 Stuttgart
Tel. 49-(0)711/685-6-3593, Fax. 49-(0)711/685-6-3658

Prof. Dr. Christian Holm

Some Movies from our Work

Granular Flows
Sand pile: [638kB]
[M. Hecht, S. Luding]
Size segregation of bidisperse granular material
Shear flow: [11MB]
[M. Hecht]
Simulations of shear flow: Micro meter sized Al2O3 particles suspended in water.
Simulation 1 [9MB] - Simulation 2 [11MB]
Dunes: [15MB] (low bandwidth [WMV, 883kB])
[O. Durán]
Interaction between dunes in a field.
Dunes: [510 kB]
[E. R. Parteli]
Solitary wave behavior of sand dunes.
Clogging of a hopper: [8MB]
[G. Kohring, H. Puhl, H. J. Tillemans, S. Melin, W. Vermöhlen]
Clogging of a hopper in 2d filled with rectangular particles due to a fluctuation in the influx. This is an industrially designed setup.
Flow through a hopper: [6-7MB]
[G. Ristow]
Discs of different size flow out of a hopper.
Experiment - Simulation 1 - Simulation 2 - Simulation 3 - Simulation 4
Spontaneous formation of clogs in pipeflow: [5-8MB]
[Th. Pöschel]
Pipe cut in 3 pieces (having periodic boundary conditions and rough walls) through which monodisperse particles flow from left to right under a bulk force (e. g. gravitation).
Simulation 1 - Simulation 2
Experiment - Simulation 3 - Simulation 4 - Simulation 5
Flow on a chute: [2-10MB]
[Th. Pöschel]
Particles of equal size flowing down a bumpy chute.
Experiment - Simulation 1 - Simulation 2
Vibration
Vibrating plate: [38MB]
[B. Wachmann]
Elastic particles jumping on a vibrating plate.
(The camera is mounted on one particle and directed to the center of the cell.)
Vibrating plate: [4-7MB]
[H. J. Herrmann]
Spherical particles on a horizontally vibrating plate with periodic boundary conditions from left to right.
Experiment - Simulation 1 - Simulation 2 - Simulation 3 - Simulation 4
Vibrating plate - convection: [7-9MB]
[H. J. Herrmann]
Particles vibrating in a horizontally shaken box. One observes at each wall a convection roll.
Experiment - Simulation 1 - Simulation 2
Brazil nut effect: [10-13MB]
[H. J. Herrmann]
Brazil nut effect in 2d:
A big red particle submerged within smaller particles rises to the top when the repository is shaken.
Experiment - Simulation 1 - Simulation 2
Shearing
Rotating drum: [4-16MB]
[V. Buchholtz, Th. Pöschel]
Particles moving in a rotating drum.
Simulation 1 - Simulation 2 - Simulation 3 - Simulation 4 - Simulation 5 - Simulation 6 - Simulation 7 - Simulation 8 - Simulation 9 - Simulation 10 - Simulation 11
Rotating shear cell: [8MB]
[S. Schöllmann, S. Luding]
Force network in a 2d rotating shear cell filled with about 3000 circular discs with two different sizes.
Rotating shear cell: [72K]
[M. Lätzel]
Simulation 1
Earthquakes: [3MB]
[H. J. Tillemans]
2d shear cell filled with polygons giving "earthquakes".
Evolution of shear bands: [3MB]
[A. Poliakov]
Evolution of shear bands in a slowly deformed 2d Mohr-Coulomb material.
Packings
Space filling bearings in 3D: [2MB]
[R. Mahmoodi Baram]
Animations showing the bearing with rotating spheres.
Simulation 1 [33MB] - Simulation 2 [41MB] - Simulation 3 [9MB]
Gases
Two-species diffusion: [12MB]
[M. Müller]
Diffusion of two species of gas particles with different masses.
Cooling of a dissipative gas: [2-10MB]
[S. Luding, M. Müller]
2d simulation with periodic boundary conditions. The system cools due to dissipation so that 10% of the relative velocity is lost per collision.
ED simulation (10^5 particles) - kinetic energy - collsion rate - initial position
DSMC simulation (10^6 particles)
Astrophysics
Planetary Ring-System: [2MB]
[M.-K. Müller]
An odyssey through the plane of a planetary ring-system.
Particles in Fluids and Gases
Sedimentation: [12MB]
[B. Wachmann]
Sedimentation of spheres in a fluid.
(The camera is mounted on one particle and directed to the center of the cell.)
Sedimentation: [10-54MB]
[K. Höfler]
Comparison of a sedimentation experiment with simulation.
Part of the movie
Rayleigh-Taylor instability: [24MB]
[S. Schwarzer]
Rayleigh-Taylor instability in sedimentation.
Aggregation of particles: [21MB]
[S. Schwarzer]
Aggregation of particles in a sheared 2d fluid.
Dynamics of polymers: [6.8MB]
[Thomas Ihle & Vasanthi R. Iyengar]
Three fibers deformed by three motor-complexes in a viscous fluid.
                Falling Sphere:   3 pt [130KB] 5 pt [184KB]
[Martin Strauß]
Falling spheres at Re = 20 simulated by Stochastic Rotation Dynamics (Malevanets-Kapral method).
Fluctuating fiber: [45MB]
[Thomas Ihle & Vasanthi R. Iyengar]
A semi-flexible fiber in a fluctuating fluid calculated by the Stochastic Rotation Dynamics (Malevanets-Kapral method).
Falling oblate ellipsoid: [930KB]
[Frank Fonseca]
Sedimentation of an oblate ellipsoid.
Membranes
Membrane: [9MB]
[S. Luding]
A film of an ED simulation of membrane dynamics. The membrane contains 9000 spheres which are connected by strings.
Tethered membranes: [1-3MB]
[S. Miller]
ED simulations of tethered membranes.
Membrane - hexagon
Gas-filled spherical membrane in a gravitational field
2 membranes in shear flow
Porous Media
Mixing in fractured network: [0.3MB]
[M. Madadi]
Mixing of two miscible fluids, in a network of fractures. Each fracture is a 2D channel with rough and self-affine surfaces.
Der Stein: [8MB]
[Ch. Manwart]
Flight through a sandstone.

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Last Modified: 20.07.2006 18:35:32 CEST by Webmaster | Legal Notice/Impressum