Pumps modelling of a sodium fast reactor design and analysis of hydrodynamic behavior José Ordóñez Ródenas, Aurelio Lázaro Chueca and Sebastián Martorell Alsina EPJ Nuclear Sci. Technol., 2 (2016) 38 Published online: 23 September 2016 DOI: 10.1051/epjn/2016027