Modelling of a Tesla turbine gap between the rotor disks Andromachi Papagianni, Theofilos Efstathiadis, Aggelos Gaitanis and Anestis Kalfas E3S Web Conf., 113 (2019) 03013 Published online: 21 August 2019 DOI: 10.1051/e3sconf/201911303013