Effects of an Impeller Rim and Radial Clearance on Energy Characteristics of an Axial PumpD. G. Svoboda, V. A. Golikov, A. A. Zharkovskii and A. A. KlyuyevE3S Web Conf., 320 (2021) 04006DOI: https://doi.org/10.1051/e3sconf/202132004006