Mesoscale modeling of intergranular bubble percolation in nuclear fuels
Phase-field simulations are used to examine the variability of intergranular fission gas bubble growth and percolation on uranium dioxide grain boundaries on a mesoscopic length scale. Three key parameters are systematically varied in this study: the contact angle (or dihedral angle) defining the bu...
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| Veröffentlicht in: | Journal of applied physics 2012-04, Vol.111 (8), p.083511-083511-7 |
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| container_end_page | 083511-7 |
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| container_issue | 8 |
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| container_title | Journal of applied physics |
| container_volume | 111 |
| creator | Millett, Paul C. Tonks, Michael Biner, S. B. |
| description | Phase-field simulations are used to examine the variability of intergranular fission gas bubble growth and percolation on uranium dioxide grain boundaries on a mesoscopic length scale. Three key parameters are systematically varied in this study: the contact angle (or dihedral angle) defining the bubble shape, the initial bubble density on the grain boundary plane, and the ratio of the gas diffusivity on the grain boundary versus the grain interiors. The simulation results agree well with previous experimental data obtained for bubble densities and average bubble areas during coalescence events. Interestingly, the rate of percolation is found to be highly variable, with a large dependency on the contact angle and the initial bubble density and little-to-no dependency on the grain boundary gas diffusivity. |
| doi_str_mv | 10.1063/1.3702872 |
| format | Article |
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B.</creator><creatorcontrib>Millett, Paul C. ; Tonks, Michael ; Biner, S. B. ; Idaho National Laboratory (INL)</creatorcontrib><description>Phase-field simulations are used to examine the variability of intergranular fission gas bubble growth and percolation on uranium dioxide grain boundaries on a mesoscopic length scale. Three key parameters are systematically varied in this study: the contact angle (or dihedral angle) defining the bubble shape, the initial bubble density on the grain boundary plane, and the ratio of the gas diffusivity on the grain boundary versus the grain interiors. The simulation results agree well with previous experimental data obtained for bubble densities and average bubble areas during coalescence events. Interestingly, the rate of percolation is found to be highly variable, with a large dependency on the contact angle and the initial bubble density and little-to-no dependency on the grain boundary gas diffusivity.</description><identifier>ISSN: 0021-8979</identifier><identifier>EISSN: 1089-7550</identifier><identifier>DOI: 10.1063/1.3702872</identifier><identifier>CODEN: JAPIAU</identifier><language>eng</language><publisher>United States: American Institute of Physics</publisher><subject>BUBBLE GROWTH ; BUBBLES ; COALESCENCE ; FISSION ; GRAIN BOUNDARIES ; MATERIALS SCIENCE ; Modeling and Simulation ; NUCLEAR FUEL CYCLE AND FUEL MATERIALS ; NUCLEAR FUELS ; SHAPE ; SIMULATION ; URANIUM DIOXIDE</subject><ispartof>Journal of applied physics, 2012-04, Vol.111 (8), p.083511-083511-7</ispartof><rights>2012 American Institute of Physics</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c344t-5a893d6cfa9676d576cf72dc23870830817c9d98f7fa4b53018b15e9246efe403</citedby><cites>FETCH-LOGICAL-c344t-5a893d6cfa9676d576cf72dc23870830817c9d98f7fa4b53018b15e9246efe403</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/jap/article-lookup/doi/10.1063/1.3702872$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>230,314,780,784,794,885,1559,4512,27924,27925,76384,76390</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/1041269$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Millett, Paul C.</creatorcontrib><creatorcontrib>Tonks, Michael</creatorcontrib><creatorcontrib>Biner, S. B.</creatorcontrib><creatorcontrib>Idaho National Laboratory (INL)</creatorcontrib><title>Mesoscale modeling of intergranular bubble percolation in nuclear fuels</title><title>Journal of applied physics</title><description>Phase-field simulations are used to examine the variability of intergranular fission gas bubble growth and percolation on uranium dioxide grain boundaries on a mesoscopic length scale. Three key parameters are systematically varied in this study: the contact angle (or dihedral angle) defining the bubble shape, the initial bubble density on the grain boundary plane, and the ratio of the gas diffusivity on the grain boundary versus the grain interiors. The simulation results agree well with previous experimental data obtained for bubble densities and average bubble areas during coalescence events. Interestingly, the rate of percolation is found to be highly variable, with a large dependency on the contact angle and the initial bubble density and little-to-no dependency on the grain boundary gas diffusivity.</description><subject>BUBBLE GROWTH</subject><subject>BUBBLES</subject><subject>COALESCENCE</subject><subject>FISSION</subject><subject>GRAIN BOUNDARIES</subject><subject>MATERIALS SCIENCE</subject><subject>Modeling and Simulation</subject><subject>NUCLEAR FUEL CYCLE AND FUEL MATERIALS</subject><subject>NUCLEAR FUELS</subject><subject>SHAPE</subject><subject>SIMULATION</subject><subject>URANIUM DIOXIDE</subject><issn>0021-8979</issn><issn>1089-7550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNp10EFPwyAUwHFiNHFOD36DxpMeOqG0BS4mZtFpMuNFz4TSx6xhMIEe_PYyq9488RJ-eS_5I3RO8ILgll6TBWW44qw6QDOCuShZ0-BDNMO4IiUXTByjkxjfMSaEUzFDqyeIPmplodj6HuzgNoU3xeAShE1QbrQqFN3YdRnsIGhvVRq8y6Bwo7aQf80INp6iI6NshLOfd45e7-9elg_l-nn1uLxdl5rWdSobxQXtW22UaFnbNyyPrOp1RTnDnGJOmBa94IYZVXcNxYR3pAFR1S0YqDGdo4tpr49pkFEPCfSb9s6BTpLgmlStyOhyQrvgP0aISW6HqMFa5cCPUZJ8LsepWZPp1UR18DEGMHIXhq0Kn3mZ3BeVRP4UzfZmsvuz3xn-x39Z5W9W6ekXPfh8tA</recordid><startdate>20120415</startdate><enddate>20120415</enddate><creator>Millett, Paul C.</creator><creator>Tonks, Michael</creator><creator>Biner, S. B.</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>KL.</scope><scope>OTOTI</scope></search><sort><creationdate>20120415</creationdate><title>Mesoscale modeling of intergranular bubble percolation in nuclear fuels</title><author>Millett, Paul C. ; Tonks, Michael ; Biner, S. B.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c344t-5a893d6cfa9676d576cf72dc23870830817c9d98f7fa4b53018b15e9246efe403</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>BUBBLE GROWTH</topic><topic>BUBBLES</topic><topic>COALESCENCE</topic><topic>FISSION</topic><topic>GRAIN BOUNDARIES</topic><topic>MATERIALS SCIENCE</topic><topic>Modeling and Simulation</topic><topic>NUCLEAR FUEL CYCLE AND FUEL MATERIALS</topic><topic>NUCLEAR FUELS</topic><topic>SHAPE</topic><topic>SIMULATION</topic><topic>URANIUM DIOXIDE</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Millett, Paul C.</creatorcontrib><creatorcontrib>Tonks, Michael</creatorcontrib><creatorcontrib>Biner, S. B.</creatorcontrib><creatorcontrib>Idaho National Laboratory (INL)</creatorcontrib><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>OSTI.GOV</collection><jtitle>Journal of applied physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Millett, Paul C.</au><au>Tonks, Michael</au><au>Biner, S. B.</au><aucorp>Idaho National Laboratory (INL)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mesoscale modeling of intergranular bubble percolation in nuclear fuels</atitle><jtitle>Journal of applied physics</jtitle><date>2012-04-15</date><risdate>2012</risdate><volume>111</volume><issue>8</issue><spage>083511</spage><epage>083511-7</epage><pages>083511-083511-7</pages><issn>0021-8979</issn><eissn>1089-7550</eissn><coden>JAPIAU</coden><abstract>Phase-field simulations are used to examine the variability of intergranular fission gas bubble growth and percolation on uranium dioxide grain boundaries on a mesoscopic length scale. Three key parameters are systematically varied in this study: the contact angle (or dihedral angle) defining the bubble shape, the initial bubble density on the grain boundary plane, and the ratio of the gas diffusivity on the grain boundary versus the grain interiors. The simulation results agree well with previous experimental data obtained for bubble densities and average bubble areas during coalescence events. Interestingly, the rate of percolation is found to be highly variable, with a large dependency on the contact angle and the initial bubble density and little-to-no dependency on the grain boundary gas diffusivity.</abstract><cop>United States</cop><pub>American Institute of Physics</pub><doi>10.1063/1.3702872</doi></addata></record> |
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| ispartof | Journal of applied physics, 2012-04, Vol.111 (8), p.083511-083511-7 |
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| language | eng |
| recordid | cdi_osti_scitechconnect_1041269 |
| source | American Institute of Physics (AIP) Journals; AIP Digital Archive; Alma/SFX Local Collection |
| subjects | BUBBLE GROWTH BUBBLES COALESCENCE FISSION GRAIN BOUNDARIES MATERIALS SCIENCE Modeling and Simulation NUCLEAR FUEL CYCLE AND FUEL MATERIALS NUCLEAR FUELS SHAPE SIMULATION URANIUM DIOXIDE |
| title | Mesoscale modeling of intergranular bubble percolation in nuclear fuels |
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