TY - JOUR
T1 - Serpent2-SUBCHANFLOW pin-by-pin modelling capabilities for VVER geometries
AU - García, Manuel
AU - Ferraro, D.
AU - Valtavirta, V.
AU - Tuominen, Riku
AU - Imke, Uwe
AU - Leppänen, Jaakko
AU - Sanchez-Espinoza, Victor
N1 - Funding Information:
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.
Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2020/1
Y1 - 2020/1
N2 - In the framework of the EU Horizon 2020 McSAFE project, a Serpent2-SUBCHANFLOW coupling has been developed with the aim at performing large-scale pin-by-pin depletion and transient calculations in Light Water Reactors. While this tool is not tied to a specific type of geometry, a set of capabilities have been developed to generate the pin-level hexagonal models corresponding to VVER reactors. The handling of VVER geometries is based on the use of nested hexagonal regular meshes in Serpent2, pin-level subchannel models in SUBCHANFLOW and unstructured meshes for feedback exchange and interpolation. In this work, these features are explained in detail and illustrated in a VVER-1000 fuel assembly. For this test case, an in-depth analysis is made regarding the modelling considerations in SUBCHANFLOW and their impact on the neutronic solution. In particular, the use of coolant- and fuel-centered subchannels and the explicit modelling of stiffener plates is discussed.
AB - In the framework of the EU Horizon 2020 McSAFE project, a Serpent2-SUBCHANFLOW coupling has been developed with the aim at performing large-scale pin-by-pin depletion and transient calculations in Light Water Reactors. While this tool is not tied to a specific type of geometry, a set of capabilities have been developed to generate the pin-level hexagonal models corresponding to VVER reactors. The handling of VVER geometries is based on the use of nested hexagonal regular meshes in Serpent2, pin-level subchannel models in SUBCHANFLOW and unstructured meshes for feedback exchange and interpolation. In this work, these features are explained in detail and illustrated in a VVER-1000 fuel assembly. For this test case, an in-depth analysis is made regarding the modelling considerations in SUBCHANFLOW and their impact on the neutronic solution. In particular, the use of coolant- and fuel-centered subchannels and the explicit modelling of stiffener plates is discussed.
KW - Multiphysics
KW - Serpent2
KW - SUBCHANFLOW
KW - VVER
UR - http://www.scopus.com/inward/record.url?scp=85073705348&partnerID=8YFLogxK
U2 - 10.1016/j.anucene.2019.106955
DO - 10.1016/j.anucene.2019.106955
M3 - Article
AN - SCOPUS:85073705348
SN - 0306-4549
VL - 135
JO - Annals of Nuclear Energy
JF - Annals of Nuclear Energy
M1 - 106955
ER -