Joint plus conductor thermal-hydraulic experiment and analysis on the FullSize Joint Sample using MITHRANDIR 2.1

Accurate modeling of thermal-hydraulic transients in a joint + conductor sy stem, e.g., in the analysis of the test program of the ITER Model Coils (CS MC and TFMC) requires a major extension of existing codes. The two-fluid MI THRANDIR code has been upgraded accordingly to version 2.1 and it can now d eal with variable geometry and materials along the hydraulic path. A limite d validation of the extended quasi one-dimensional model is presented again st data we obtained in dedicated thermal-hydraulic tests on the Full Size J oint Sample (FSJS). Taking into account experimental uncertainties the agre ement between prediction and measurement can be considered good.