Journal Article

FZJ-2023-00005

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Epistemic uncertainty in URANS based CFD analysis of buoyancy driven flows—Comparison of URANS and LES

Ji, R. (Corresponding author)FZJ* ; Wenig, P. J. ; Kelm, S.FZJ* ; Klein, M.

2023
Elsevier Science Amsterdam [u.a.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/33783  doi:10.1016/j.anucene.2022.109563

Abstract: 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.

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Contributing Institute(s):

1. Elektrochemische Verfahrenstechnik (IEK-14)

Research Program(s):

1. 1422 - Beyond Design Basis Accidents and Emergency Management (POF4-142) (POF4-142)

Appears in the scientific report 2023

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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