Discharge of a 2D magnetic silo Louison Thorens, Maud Viallet, Knut Jørgen Måløy, Mickaël Bourgoin and Stéphane Santucci EPJ Web Conf., 249 (2021) 03017 Published online: 07 June 2021 DOI: 10.1051/epjconf/202124903017