Modeling of combustion processes in a solid fuel particle

Conference · Sun Jan 01 00:00:00 EST 1989

OSTI ID:6202495

Howard, D W

During the production of granules or uranium oxide, granules of ion-exchange resin, loaded with uranium ions, are burned to remove the resin matrix and leave a uranium oxide ''ash''. Under some conditions of combustion, the oxide granules are produced in a highly fractured, porous state, while other conditions result in hard, dense, solid granules. ABAQUS was used to model the physical processes occurring during combustion: heat transfer with a very non-linear temperature dependent rate of heat generation, diffusion of reactants and products, and stress/strain resulting from the differential temperatures and from the phase changes during the combustion. The ABAQUS simulation was very successful in explaining the differences in morphology of the granules under different conditions, and in leading to control strategies to produce the desired morphology. However, some of the limitations of ABAQUS prevented obtaining as accurate a simulation as desired. 10 figs.

• Research Organization: Savannah River Lab., Aiken, SC (USA)
• DOE Contract Number: AC09-76SR00001
• OSTI ID: 6202495
• Report Number(s): DP-MS-89-38; CONF-8905103-1; ON: DE89008306
• Resource Relation: Conference: 2. annual ABACUS users' conference, Stresa, Italy, 24 May 1989; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
36 MATERIALS SCIENCE
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
COMBUSTION
A CODES
DIVINYLBENZENE
COMBUSTION KINETICS
RESINS
STYRENE
URANIUM IONS
URANIUM OXIDES
CHEMICAL PREPARATION
CALCINATION
COMPUTERIZED SIMULATION
DIFFUSION
HEAT TRANSFER
MICROSTRUCTURE
PARTICLES
PHASE TRANSFORMATIONS
POROSITY
SOLIDS
THERMAL EXPANSION
ACTINIDE COMPOUNDS
ALKYLATED AROMATICS
AROMATICS
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMPUTER CODES
CRYSTAL STRUCTURE
DECOMPOSITION
ENERGY TRANSFER
EXPANSION
HYDROCARBONS
IONS
KINETICS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
PYROLYSIS
REACTION KINETICS
SIMULATION
SYNTHESIS
THERMOCHEMICAL PROCESSES
URANIUM COMPOUNDS
050700* - Nuclear Fuels- Fuels Production & Properties
360201 - Ceramics
Cermets
& Refractories- Preparation & Fabrication
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies
400201 - Chemical & Physicochemical Properties