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.
|Number of pages||8|
|Journal||EPJ Web of Conferences|
|Publication status||Published - 2020|
|MoE publication type||A4 Article in a conference publication|
|Event||International Conference on Physics of Reactors, PHYSOR 2020: Transition to a Scalable Nuclear Future - Cambridge, United Kingdom|
Duration: 28 Mar 2020 → 2 Apr 2020
- Subchannel coarsening