CFD study of the PTS experiment in ROCOM test facility (CROSBI ID 283828)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Čarija, Zoran ; Ledić, Fran ; Sikirica, Ante ; Niceno, Bojan
engleski
CFD study of the PTS experiment in ROCOM test facility
With the aging of nuclear reactors, embrittlement of the reactor pressure vessel (RPV) steel, as a consequence of routine operations, is highly probable. To ensure operational integrity and safety, prediction and mitigation of compromising damage, brought on by pressurized thermal shock (PTS) following an emergency procedure, is of utmost importance. Computational fluid dynamics (CFD) codes can be employed to predict these events and have therefore been an acceptable method for such assessments. In this paper, CFD simulations of a density driven ECC state in the ROCOM facility are analyzed. Obtained numerical results are validated with the experimental measurements. Considerable attention is attributed to the boundary conditions and their influence, specifically outlet definitions, in order to determine and adequately replicate the non-active pumps in the facility. Consequent analyses focused on initial conditions as well as on the temporal discretization and inner iterations. Disparities due to different turbulent modelling approaches are investigated for standard RANS models. Based on observed trends for different cases, a definitive simulation setup has been established, results of which have been ultimately compared to the measurements.
ROCOM, CFD, Turbulent mixing
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Podaci o izdanju
1
2020.
1
9
objavljeno
1738-5733
2234-358X
10.1016/j.net.2020.06.002
Povezanost rada
nije evidentirano