Comparison of the fuel performance for advanced FBR cycle systems, FUJI project, 11; Modeling results of a sphere-pac fuel design code, DIRAD-S

Nakamura, Masahiro  ; Morihira, Masayuki ; Kihara, Yoshiyuki; Sekine, Nobuyuki*; Hellwig, C.*; Bakker, K.*

In the framework of collaboration among JNC (now JAEA), PSI and NRG called "he FUJI project" calculation results of a sphere-pac fuel design code, DIRAD-S were compared to the PIE results. DIRAD-S contains a thermal conductivity model of a particle bed, named SPACON, and mechanistic models for the necking calculation between particles. The calculation results had good agreement with the PIE results.