TIETHYS is the OECD NEA online database which allows users to identify thermal-hydraulic experimental systems relevant for validation of numerical models and computer codes.
The systems are arranged according to reactor type and specific scenario (e.g. large break LOCA) and by individual phases (blowdown, refill, reflood, etc.). They are also linked to relevant physical phenomena suitably replicated by the given system. This information was based initially on CSNI Code Validation Matrices (CCVM) documents held within the NEA databank.
The tool also gives access to facility descriptions, references and additional information at both the IET (Integral Effects Test), SET (Single Effect Test) and CFD (Computational Fluid Dynamics) levels. In addition, a pilot demonstration on how computer model development data can be collected and organised in TIETHYS has been included for the Pressurizer component of LOFT.