The influence of the shape of the end faces on the efficiency of a cycloidal rotor Dmitrii Dekterev, Aleksandr Dekterev, Artem Dekterev and Pavel Neobyavlyayushchiy E3S Web Conf., 578 (2024) 01005 Published online: 14 October 2024 DOI: 10.1051/e3sconf/202457801005