Pressure drop calculation mudules for KALIMER core conceptual design

Pressure drop calculation modules for KALIMER conceptual design has been developed. The module is divided into seven sub-modules which were classified by fluid characteristics of the coolant in the sodium cooled LMR subassemblies. For each modules, fuel bundle module includes Novendstern, CRT(Chiu-Rosenhow-Todreas) and CT (Cheng and Todreas) model and others were developed by using simple formulas of sudden expansion and sudden contraction. A case calculation study was done using design data of a KALIMER breakeven core conceptual design. As a calculation result, total pressure drop in the LMR whole core was calculated as 0.495 MPa, which is in the reasonable pressure drop range. The modules will be used for LMR whole core pressure drop calculation in the core conceptual design with further improvements