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Microstructurally Explicit Simulation of the Transport Behavior in Uranium Dioxide


Abstract Fission products in nuclear fuel pellets can affect fuel performance as they change the fuel chemistry and structure. The behavior of the fission products and their release mechanisms are important to the operation of a power reactor. Research has shown that fission product release can occur through grain boundary (GB) at low burnups. Early fission gas release models, which assumed spherical grains with no effect of GB diffusion, did not capture the early stage of the release behavior well. In order to understand the phenomenon at low burnup and how it leads to the later release mechanism, a microstructurally explicit model is needed. This dissertation conducted finite element simulations of the transport behavior using 3-D microstructurall... (more)
Created Date 2014
Contributor Lim, Harn Chyi (Author) / Peralta, Pedro (Advisor) / Jiang, Hanqing (Committee member) / Solanki, Kiran (Committee member) / Arizona State University (Publisher)
Subject Materials Science / Nuclear engineering / Mechanical engineering / fission product transport / grain boundary diffusion / microstructure / multiphysics simulation
Type Doctoral Dissertation
Extent 204 pages
Language English
Copyright
Reuse Permissions All Rights Reserved
Note Doctoral Dissertation Materials Science and Engineering 2014
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis