“…However, if the Reynolds similarity criterion is met, it is possible to analyze the flow characteristics of LBE through tests with alternative working fluids. This can be achieved by designing an appropriate test section and selecting an alternative working fluid [ [6] , [7] , [8] , [9] ]. In previous decades, researchers have experimentally and numerically investigated the hydraulic characteristics in a wire-wrapped fuel bundle channel on the basis of dimensional analysis and similarity theory.…”