Lattice Boltzmann model for magnetic fluid interfaces

A Lattice Boltzmann model is developed to account for the competition betwe en surface tension and dipolar interaction in magnetic fluids. The descript ion of the interactions was kept as simple as possible to identify and isol ate the nature of the essential interactions in the examined situations. Th e model is used thereafter in order to simulate the deformation of a magnet ic fluid drop under the action of an external magnetic field, as well as th e onset of the normal field instability in magnetic fluids. The success of the model, and easily identified deviations, demonstrate that the model is a powerful and versatile tool for the study of magnetic and nonmagnetic flu id systems with interfaces.