TY - JOUR
T1 - Modeling high burnup structure in oxide fuels for application to fuel performance codes. Part II
T2 - Porosity evolution
AU - Barani, Tommaso
AU - Pizzocri, Davide
AU - Cappia, Fabiola
AU - Pastore, Giovanni
AU - Luzzi, Lelio
AU - Van Uffelen, Paul
N1 - Funding Information:
This work has been supported by the ENEN + project that has received funding from the Euratom research and training Work Programme 2016-2017-1 #755576, and has received funding from the Euratom research and training programme 2014-2018 through the INSPYRE Project under grant agreement No. 754329.
Funding Information:
This work has been supported by the ENEN + project that has received funding from the Euratom research and training Work Programme 2016-2017-1 #755576, and has received funding from the Euratom research and training programme 2014-2018 through the INSPYRE Project under grant agreement No. 754329. This work contributes to the U.S.-EURATOM International Nuclear Energy Research Initiative (INERI) project 2017-004-E on Modelling of Fission Gas Behaviour in Uranium Oxide Nuclear Fuel Applied to Engineering Fuel Performance Codes. The submitted manuscript has been authored by a contractor of the U.S. Government under Contract DE-AC07-05ID14517. Accordingly, the U.S. Government retains a non-exclusive, royalty free license to publish or reproduce the published form of this contribution, or allow others to do so, for U.S. Government purposes.
Funding Information:
The submitted manuscript has been authored by a contractor of the U.S. Government under Contract DE-AC07-05ID14517. Accordingly, the U.S. Government retains a non-exclusive, royalty free license to publish or reproduce the published form of this contribution, or allow others to do so, for U.S. Government purposes.
Publisher Copyright:
© 2022
PY - 2022/5
Y1 - 2022/5
N2 - We propose a model describing the high burnup structure inter-granular porosity evolution under irradiation. The evolution of the porosity collecting the gas diffusing from the grains is modeled by exploiting a second-order Fokker-Planck expansion of the cluster-dynamics master equations governing the problem, considering nucleation of pores, gas absorption due to the diffusional flow from the grains, size-dependent re-solution of gas from pores due to interaction with fission fragments, vacancy absorption, and pore coalescence. Model predictions on xenon local retention, matrix fuel swelling, and porosity evolution are compared to experimental data and to models available in fuel performance codes.
AB - We propose a model describing the high burnup structure inter-granular porosity evolution under irradiation. The evolution of the porosity collecting the gas diffusing from the grains is modeled by exploiting a second-order Fokker-Planck expansion of the cluster-dynamics master equations governing the problem, considering nucleation of pores, gas absorption due to the diffusional flow from the grains, size-dependent re-solution of gas from pores due to interaction with fission fragments, vacancy absorption, and pore coalescence. Model predictions on xenon local retention, matrix fuel swelling, and porosity evolution are compared to experimental data and to models available in fuel performance codes.
KW - Fission gas behaviour
KW - Fuel performance codes
KW - High burnup structure
KW - Oxide fuel
KW - Porosity
UR - https://www.scopus.com/pages/publications/85126112344
UR - https://www.mendeley.com/catalogue/b0b71e96-2951-3eee-857e-fc0df44ab5de/
U2 - 10.1016/j.jnucmat.2022.153627
DO - 10.1016/j.jnucmat.2022.153627
M3 - Article
AN - SCOPUS:85126112344
SN - 0022-3115
VL - 563
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
M1 - 153627
ER -