Serpent2-SUBCHANFLOW pin-by-pin modelling capabilities for VVER geometries

Manuel García; D. Ferraro; Ville Valtavirta; Riku Tuominen; Uwe Imke; Jaakko Leppänen; Victor Sanchez-Espinoza

doi:10.1016/j.anucene.2019.106955

Serpent2-SUBCHANFLOW pin-by-pin modelling capabilities for VVER geometries

Manuel García^*, D. Ferraro, Ville Valtavirta, Riku Tuominen, Uwe Imke, Jaakko Leppänen, Victor Sanchez-Espinoza

^*Corresponding author for this work

BA4501 Reactor analysis

Karlsruhe Institute of Technology (KIT)

Research output: Contribution to journal › Article › Scientific › peer-review

10 Citations (Scopus)

Abstract

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.

Original language	English
Article number	106955
Journal	Annals of Nuclear Energy
Volume	135
DOIs	https://doi.org/10.1016/j.anucene.2019.106955
Publication status	Published - Jan 2020
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.

Keywords

Multiphysics
Serpent2
SUBCHANFLOW
VVER

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10.1016/j.anucene.2019.106955

Cite this

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title = "Serpent2-SUBCHANFLOW pin-by-pin modelling capabilities for VVER geometries",

abstract = "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.",

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AU - García, Manuel

AU - Ferraro, D.

AU - Valtavirta, Ville

AU - Tuominen, Riku

AU - Imke, Uwe

AU - Leppänen, Jaakko

AU - Sanchez-Espinoza, Victor

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.

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KW - VVER

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VL - 135

JO - Annals of Nuclear Energy

JF - Annals of Nuclear Energy

M1 - 106955

ER -

Serpent2-SUBCHANFLOW pin-by-pin modelling capabilities for VVER geometries

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Keywords

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