Gas Entrainment Simulation for Fast Reactors using Freesurface Lattice Boltzmann Method Yos Sitompul, Kenta Sugihara, Naoyuki Onodera and Yasuhiro Idomura EPJ Web Conf., 302 (2024) 05004 Published online: 15 October 2024 DOI: 10.1051/epjconf/202430205004