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Title Gaseous swelling and release in nuclear fuels during grain growth
Publication Date
Date Accessioned
Degree MS
Discipline/Department Mechanical Engineering
Degree Level masters
University/Publisher Georgia Tech
Abstract A model of the generation and release of fission gas, as well as the total swelling over time, was created. It uses an ideal spherical fuel grain with a time-dependent radius. UO2 and quasi-homogeneous SBR MOX fuels were simulated with this model, and the results were compared to a fixed grain radius model of gaseous swelling. Gaseous swelling and fission gas release were calculated for temperatures from 1600 K to 2200 K. The grain growth of UO2 was found to decrease the time needed to saturate the intergranular boundaries as compared to simple diffusion without grain growth. Small temperatures increased the time required for saturation, as did small rates of grain growth. Gaseous swelling was within the range of values found by experimental data.
Subjects/Keywords Nuclear fuel; Gaseous swelling; Gas release; Fission gases; Nuclear fuels; Gases, Rare
Contributors Deo, Chaitanya (advisor); Petrovic, Bojan (committee member); Sjoden, Glenn E (committee member)
Language en
Country of Publication us
Record ID handle:1853/49103
Repository gatech
Date Indexed 2018-01-11
Issued Date 2013-06-28 00:00:00
Note [degree] M.S.;

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