I am a PhD student in cotutelle with the University of Oslo and the Ecole Normale Supérieure de Lyon (France). I work in Porelab on viscous flows in porous media and on dry magnetic granular media in LPENSL (Laboratoire de physique de l'Ecole Normale Supérieure de Lyon). During my master's, I studied the discharge of magnetic particles in a quasi 2D silo. I was espacially interested in the slowing down flow rate due to the magnetic field which increases the effective friction in the system.