A Collision-based Domain Decomposition scheme for large-scale depletion with the Serpent 2 Monte Carlo code

Manuel García (Corresponding Author), Jaakko Leppänen, Victor Sanchez-Espinoza

Research output: Contribution to journalArticleScientificpeer-review

Abstract

In the framework of the EU Horizon 2020 McSAFE project, high-fidelity multiphysics capabilities are being developed to carry out large-scale burnup calculations for Light Water Reactors. As part of this effort, the Serpent 2 Monte Carlo code has been coupled to thermalhydraulics and fuel-performance codes, with the final objective of performing fully coupled full-core pin-by-pin simulations. To enable memory scalability, needed for these massive problems, a Collision-based Domain Decomposition (CDD) scheme has been implemented in Serpent 2. The methodology is based on data decomposition for burnable materials and a domain decomposition particle-tracking algorithm, and is shown here to provide the required memory scalability and computational performance, with up to 50% speedup efficiency at 5,120 cores. The application of the CDD feature is demonstrated in a pin-by-pin depletion calculation for a Pre-Konvoi PWR reactor.

Original languageEnglish
Article number108026
JournalAnnals of Nuclear Energy
Volume152
DOIs
Publication statusPublished - Mar 2021
MoE publication typeA1 Journal article-refereed

Keywords

  • Collision-based Domain Decomposition
  • High Performance Computing
  • Pin-level depletion
  • Serpent 2

Fingerprint Dive into the research topics of 'A Collision-based Domain Decomposition scheme for large-scale depletion with the Serpent 2 Monte Carlo code'. Together they form a unique fingerprint.

Cite this