Korean Development of Advanced Thermalhydraulic Codes for Water Reactors and HTGRs: SPACE and GAMMA
NURETH-14 - 2011 September 25-30

Presented at:
2011 September 25-30
Toronto, Canada
Session Title:
Keynote Lectures Tuesday 1

Hee Cheon No (KAIST)


Korea has been developing SPACE (Safety and Performance Analysis CodE) and GAMMA(GAs Multicomponent Mixture Analysis) codes for safety analysis of PWRs and HTGRs, respectively. SPACE is being developed by theKoreanuclear industry, which is a thermal-hydraulic analysis code for safety analysis of a PWR. It will replace outdated vendor supplied codes and will be used for the safety analysis of operating PWR and the design of an advanced PWR. It consists of the up-to-date physical models of two-phase flow dealing with multi-dimensional two-fluid, three-field flow. The GAMMA code consists of the multi-dimensional governing equations consisting of the basic equations for continuity, momentum conservation, energy conservation of the gas mixture, and mass conservation of n species. GAMMA is based on a porous media model so that we can deal with the thermo-fluid and chemical reaction behaviors in a multicomponent mixture system as well as heat transfer within the solid components, free and forced convection between a solid and a fluid, and radiative heat transfer between the solid surfaces. GAMMA has a model for helium turbines for HTGRs based on the throughflow calculation. We performed extensive code assessment for the V&V of SPACE and GAMMA.

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