Tritium Transport Modeling at the Pore Scale in Ceramic Breeder Materials Using TMAP8

Fusion reactors depend on the blanket material to breed and release tritium at the same rate or faster than it is consumed by the fusion reaction. Cellular ceramic breeders (CCBs) are dense materials that can maintain a high tritium breeding ratio while promoting tritium release because of highly co...

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Bibliographic Details
Published in:IEEE transactions on plasma science Vol. 50; no. 11; pp. 4465 - 4471
Main Authors: Simon, Pierre-Clement A., Humrickhouse, Paul W., Lindsay, Alexander D.
Format: Journal Article Conference Proceeding
Language:English
Published: New York IEEE 01.11.2022
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
08 - HYDROGEN
70 - PLASMA PHYSICS AND FUSION TECHNOLOGY
Absorption
Blankets (fusion reactors)
Breeder reactors
Breeding
Calibration
Cellular ceramic breeder (CCB) materials
Ceramic Breeder Materials
Ceramics
Computational modeling
Data models
Deuterium
Fusion
Fusion reactors
fusion technology
MATERIALS SCIENCE
mechanistic modeling
Mesoscale Modeling
mesoscale simulation
Modelling
NUCLEAR FUEL CYCLE AND FUEL MATERIALS
Object oriented modeling
Predictive models
Sensitivity Analysis
Surface chemistry
Surface reactions
TMAP8
Tritium
tritium breeding ratio
tritium population
Tritium transport
ISSN:0093-3813, 1939-9375
Online Access:Get full text
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Summary:Fusion reactors depend on the blanket material to breed and release tritium at the same rate or faster than it is consumed by the fusion reaction. Cellular ceramic breeders (CCBs) are dense materials that can maintain a high tritium breeding ratio while promoting tritium release because of highly connected pores. Assessing the tritium breeding capabilities of these materials requires a combination of extensive experimental and modeling efforts. In this work, we develop and calibrate a multiphysics model of tritium transport. This novel model accounts for ceramic and pore diffusion, trapping and detrapping, and several surface reactions at the pore surface. We perform a sensitivity analysis and calibrate the model by comparing its predictions against experimental measurements of deuterium absorption. The calibrated model is then used to model tritium absorption in samples with different pore microstructures to investigate the effect of pore interconnectivity on tritium absorption. The model is part of the development of the multiscale, multiphysics framework for tritium transport [i.e., the Tritium Migration Analysis Program (TMAP8)], which is itself built on top of the finite-element multiphysics framework multiphysics object-oriented simulation environment (MOOSE). This study demonstrates some of TMAP8's capabilities and is the first step toward assessing the tritium breeding capabilities of ceramic breeder material designs.
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content type line 14
USDOE Office of Nuclear Energy (NE)
DE-AC07-05ID14517
INL/CON-21-65236-Rev000
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2022.3183525