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Title: Innovative nuclear fuels: results and strategy

Abstract

To facilitate the discovery and design of innovative nuclear fuels, multi-scale models and simulations are used to predict irradiation effects on the thermal conductivity, oxygen diffusivity, and thermal expansion of oxide fuels. The multi-scale approach is illustrated using results on ceramic fuels with a focus on predictions of point defect concentrations, stoichiometry, and phase stability. The high performance computer simulations include coupled heat transport, diffusion, and thermal expansion, gas bubble formation and temperature evolution in a fuel element consisting of UO2 fuel and metallic cladding. The second part of the talk is dedicated to a discussion of an international strategy for developing advanced, innovative nuclear fuels. Four initiative are proposed to accelerate the discovery and design of new materials: (a) Develop an international pool of experts, (b) Create Institutes for Materials Discovery and Design, (c) Create an International Knowledge base for experimental data, models (mathematical expressions), and simulations (codes) and (d) Organize international workshops and conference sessions. The paper ends with a discussion of existing and emerging international collaborations.

Authors:
 [1]
  1. Los Alamos National Laboratory
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1003800
Report Number(s):
LA-UR-09-03183; LA-UR-09-3183
TRN: US1100518
DOE Contract Number:  
AC52-06NA25396
Resource Type:
Conference
Resource Relation:
Conference: Top Fuel 2009 Conference ; September 6, 2009 ; Paris, France
Country of Publication:
United States
Language:
English
Subject:
11; BUBBLES; CERAMICS; COMPUTERIZED SIMULATION; DESIGN; DIFFUSION; FUEL ELEMENTS; IRRADIATION; KNOWLEDGE BASE; NUCLEAR FUELS; OXIDES; OXYGEN; PERFORMANCE; PHASE STABILITY; POINT DEFECTS; STOICHIOMETRY; THERMAL CONDUCTIVITY; THERMAL EXPANSION; TRANSPORT

Citation Formats

Stan, Marius. Innovative nuclear fuels: results and strategy. United States: N. p., 2009. Web.
Stan, Marius. Innovative nuclear fuels: results and strategy. United States.
Stan, Marius. Thu . "Innovative nuclear fuels: results and strategy". United States. https://www.osti.gov/servlets/purl/1003800.
@article{osti_1003800,
title = {Innovative nuclear fuels: results and strategy},
author = {Stan, Marius},
abstractNote = {To facilitate the discovery and design of innovative nuclear fuels, multi-scale models and simulations are used to predict irradiation effects on the thermal conductivity, oxygen diffusivity, and thermal expansion of oxide fuels. The multi-scale approach is illustrated using results on ceramic fuels with a focus on predictions of point defect concentrations, stoichiometry, and phase stability. The high performance computer simulations include coupled heat transport, diffusion, and thermal expansion, gas bubble formation and temperature evolution in a fuel element consisting of UO2 fuel and metallic cladding. The second part of the talk is dedicated to a discussion of an international strategy for developing advanced, innovative nuclear fuels. Four initiative are proposed to accelerate the discovery and design of new materials: (a) Develop an international pool of experts, (b) Create Institutes for Materials Discovery and Design, (c) Create an International Knowledge base for experimental data, models (mathematical expressions), and simulations (codes) and (d) Organize international workshops and conference sessions. The paper ends with a discussion of existing and emerging international collaborations.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {1}
}

Conference:
Other availability
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