CFD analysis of thermal stratification in core upper plenum and Z-shaped pipe of EBR-II for Shutdown Heat Removal Test-17

Yoshimura, Kazuo; Doda, Norihiro; Oki, Hiroshi*; Fujisaki, Tatsuya*; Tanaka, Masaaki; Vilim, R. B.*

no journal, , 

The CFD analysis of SHRT-17 test in the experimental fast bread reactor of EBR-II, was carried out to investigate the thermal stratification measured in the core upper plenum with the simulation result in the test. From the numerical simulation, it could be confirmed that the driving force of the natural circulation through the whole plant was influenced by the thermal stratification in the upper part of the core upper plenum and in the sloped part of the Z-shaped pipe.