Thermal-hydraulics and neutronic code coupling for RELAP/SCDAPSIM/MOD4.0

Akbas, Sabahattin; Martinez-Quiroga, V.; Aydoğan, Fatih; Allison, C.M.; Ougouag, Abderrafi M.

doi:10.1016/j.nucengdes.2019.01.009

Cited by 4 publications

(1 citation statement)

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“…Such coupling allows, for example, combined analyses that include primary system thermal hydraulics with detailed core thermal hydraulics and neutronics. Coupling various versions of RELAP5 with reactor neutron kinetics codes is described by Akbas et al, 5 Busquim e Sliva et al, 6 and Guisset et al 7 A combined primary system and containment analysis using RELAP5 and GOTHIC 7.2 is described by Byun et al 8 Some general methods have been developed for coupling various versions of RELAP5 with other codes, including a shared memory approach 4 and R5EXEC (Refs. 9, 10, and 11).…”

Section: Introductionmentioning

confidence: 99%

Coupling Gothic and RELAP5 for Passive Containment Cooling Modeling

et al. 2021

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GOTHIC and RELAP5 have been coupled to model the containment and passive containment cooling system (PCCS) for the Korean advanced containment designs. In the coupled system, GOTHIC models the containment and the outer shell (mid tube wall to outside surface) of the PCCS heat exchanger tubes and RELAP5 models the inner shell (inside surface to mid tube wall) and the coolant loop to the external heat sink. The coupling approach leverages the modeling capabilities of RELAP5 for piping load analysis and the capabilities of GOTHIC for containment and heat/ mass transfer with noncondensing gases. With the coupled model, it is possible to apply the thermal-hydraulic load analysis on the PCCS supply and return piping considering the containment conditions predicted by GOTHIC during a loss-of-coolant accident (LOCA). This paper describes the coupling approach, a coupling dynamic linked library for GOTHIC, modifications to RELAP5, and verification of the coupling. Last, demonstration results from a LOCA simulation with four PCCS trains is provided and the results of the GOTHIC/RELAP5-coupled model are compared to a GOTHIC-only result, where GOTHIC was used to model both the containment and the PCCS.

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Section: Introductionmentioning

confidence: 99%