Full Title: Best Practice Guidelines for the Use of CFD in Nuclear Reactor Safety Applications – 2024 Update
Author(s): Nuclear Energy Agency
Publisher(s): Nuclear Energy Agency
Publication Date: March 21, 2025
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Description (excerpt):
The aim of this second revision of the Best Practice Guidelines (BPG) is to provide guidance to the user of computational fluid dynamics (CFD) codes, both novice and experienced, in the field of nuclear reactor safety (NRS). It gives a complete set of guidelines for a wide range of single-phase applications of CFD to NRS problems. The original document, Best Practice Guidelines for the Use of CFD in Nuclear Reactor Safety Applications [1] has known two successive revisions, one in 2015 [2], and the present report. Changes are summarised in Annex II.
Computational fluid dynamics (CFD) codes are scientific computing tools that consider explicitly 3-D geometric features while solving momentum, heat and mass balances through a fluid domain. The use of CFD in the field of nuclear reactor safety (NRS) thermal hydraulics has been identified as the most relevant approach for several issues, for which access to data at a local scale can bring a real benefit. The development of CFD codes is fast evolving and their implication in safety assessment studies has been increasing sharply over the past two decades. The specificities of such tools raise the question of adapted methodologies for those studies.