TY  - JOUR
AU  - Ji, Ruiyun
AU  - Wenig, Philipp Josef
AU  - Kelm, Stephan
AU  - Klein, Markus
TI  - Epistemic uncertainty in URANS based CFD analysis of buoyancy driven flows—Comparison of URANS and LES
JO  - Annals of nuclear energy
VL  - 181
SN  - 0306-4549
CY  - Amsterdam [u.a.]
PB  - Elsevier Science
M1  - FZJ-2023-00005
SP  - 109563 -
PY  - 2023
AB  - The containment is the last barrier to prevent the release of radioactive materials into the environment in case of a severe reactor accident. Thus, it is important to understand the flow and transport processes of combustible gases and to develop strategies to maintain the integrity of the containment. A holistic OpenFOAM-based CFD software package, containmentFOAM, is developed for containment analysis. During the validation of the code with regard to free convection flows and mixing processes, it became apparent that the simulation results are fairly sensitive to the definition of initial and boundary conditions, which are often not precisely known from the experiment. Therefore, establishing the validity of the models is impossible without a quantification of uncertainties.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000890307700003
DO  - DOI:10.1016/j.anucene.2022.109563
UR  - https://juser.fz-juelich.de/record/916653
ER  -