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Granular Rayleigh-Taylor Instability: Experiments and Simulations
Jan Ludvig Vinningland, Oistein Johnsen, Eirik G. Flekkoy +2
A granular instability driven by gravity is studied experimentally and numerically. The instability arises as grains fall in a closed Hele-Shaw cell where a layer of dense granular…
Self-assembly and dynamics of magnetic holes
Arne T. Skjeltorp, Jorgen Akselvoll, Kai De Lange Kistiansen +4
Nonmagnetic particles in magnetized ferrofluids have been denoted magnetic holes and are in many ways ideal model systems to test various forms of particle self assembly and dynami…
Interaction model for magnetic holes in a ferrofluid layer
Renaud Toussaint, Jørgen Akselvoll, Eirik G. Flekkøy +2
Nonmagnetic spheres confined in a ferrofluid layer (magnetic holes) present dipolar interactions when an external magnetic field is exerted. The interaction potential of a microsph…