A subchannel coarsening method for Serpent2-SUBCHANFLOW applied to a full-core VVER problem

Manuel García, Diego Ferraro, Ville Valtavirta, Riku Tuominen, Uwe Imke, Luigi Mercatali, Victor Sanchez-Espinoza, Jaakko Leppänen

Research output: Contribution to journalArticle in a proceedings journalScientificpeer-review

Abstract

This work presents a methodology to coarsen subchannel models to accelerate large-scale Serpent2-SUBCHANFLOW calculations. The method is based on first building a fully detailed subchannel model and then combining subchannels into larger channels with condensed hydraulic parameters. To quantify the accuracy and performance of this scheme, a full-core VVER-1000 problem is simulated with Serpent2-SUBCHANFLOW using two types of coarsened models, as well as a standard subchannel model as reference.

Original languageEnglish
Pages (from-to)1049-1056
Number of pages8
JournalEPJ Web of Conferences
Volume247
DOIs
Publication statusPublished - 2020
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Physics of Reactors, PHYSOR 2020: Transition to a Scalable Nuclear Future - Cambridge, United Kingdom
Duration: 28 Mar 20202 Apr 2020

Keywords

  • Multiphysics
  • Serpent2
  • SUBCHANFLOW
  • Subchannel coarsening
  • VVER

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