DYN3D and CTF Coupling within a Multiscale and Multiphysics Software Development (Part II)

Sebastian Davies, Dzianis Litskevich, Bruno Merk, Andrew Levers, Paul Bryce and Anna Detkina
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Sebastian Davies: School of Engineering, University of Liverpool, Liverpool L69 3GH, UK
Dzianis Litskevich: School of Engineering, University of Liverpool, Liverpool L69 3GH, UK
Bruno Merk: School of Engineering, University of Liverpool, Liverpool L69 3GH, UK
Andrew Levers: School of Engineering, University of Liverpool, Liverpool L69 3GH, UK
Paul Bryce: EDF Energy, Gloucester GL4 3RS, UK
Anna Detkina: School of Engineering, University of Liverpool, Liverpool L69 3GH, UK

Energies, 2022, vol. 15, issue 13, 1-38

Abstract: Traditionally, the complex coupled physical phenomena in nuclear reactors has resulted in them being treated separately or, at most, simplistically coupled in between within nuclear codes. Currently, coupling software environments are allowing different types of coupling, modularizing the nuclear codes or multi-physics. Several multiscale and multi-physics software developments for LWR are incorporating these to deliver improved or full coupled reactor physics at the fuel pin level. An alternative multiscale and multi-physics nuclear software development between NURESIM and CASL is being created for the UK. The coupling between DYN3D nodal code and CTF subchannel code can be used to deliver improved coupled reactor physics at the fuel pin level. In the current journal article, the second part of the DYN3D and CTF coupling was carried out to analyse a parallel two-way coupling between these codes and, hence, the outer iterations necessary for convergence to deliver verified improved coupled reactor physics at the fuel pin level. This final verification shows that the DYN3D and CTF coupling delivers improved effective multiplication factors, fission, and feedback distributions due to the presence of crossflow and turbulent mixing.

Keywords: nuclear software development; coupled reactor physics; nodal code; subchannel code; DYN3D; CTF; KAIST (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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