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Ph. D. Simulations and associated researches
The simulations performed during my Ph.D. and the ones performed actually are realized withe the LMGC90 numerical platform (jump to the webPage).
The snapshot represents the simulation of a three-dimensional surface flow in a rotating drum (6 RPM in this case). Contact between spheres and between sphere and boundary is an unilateral frictional contact law with normal restitution. The influence of the lateral friction have been investigated to see its influence on the surface flow (see the list of publication).
Initial sample of a silo draining simulation. Unfortunately a cat have been lock inside. Silo draining simulation are usefull to optimize the geometry of silo to avoid arching effect for example. The simulation of the "Geluck Cat" flow have been performed for the J.-J. Moreau 80th Anniversary Symposium in Montpellier November 2003.
Simulation of "the Brazil Nuts Effect": Small spheres fill a box which contains a bigger one. A oscillatory motion is given to the lower boundary. The interactions between bodies are unilateral contact, restitution and Coulomb friction. During the simulation the bigger particle come to the surface of the sample.
Real-time simulation of spheres moving from a box to a cup. The contact law used for the simulation is a frictional unilateral contact law.
Simulation of the Chateau Gombert experiment. A wall composed of 103 bricks stands on two platforms. One of them is animated of a vertical velocity creating the separation of block. The separation profile of the simulation match strongly with the one of the experiment. See also the Ph.D. of Gilles Saussine (pdf here) to see other simulations with polyedra using the LMGC90 Sofware.
Other research simulations: The Art of the Bugs