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 language | English |
|---|---|
| Article number | 108026 |
| Journal | Annals of Nuclear Energy |
| Volume | 152 |
| DOIs | |
| Publication status | Published - Mar 2021 |
| MoE publication type | A1 Journal article-refereed |
Funding
This work was done within the McSAFE project which is receiving funding from the Euratom research and training programme 2014–2018 under grant agreement No 755097. This work was performed on the computational resource ForHLR II funded by the Ministry of Science, Research and the Arts Baden-Württemberg and DFG (”Deutsche Forschungsgemeinschaft”).
Keywords
- Collision-based Domain Decomposition
- High Performance Computing
- Pin-level depletion
- Serpent 2