Three dimensional calculations of the effective Kapitza resistance of UO2 grain boundaries containing intergranular bubbles
A parametric study has been performed that quantifies the effective change in grain boundary Kapitza resistance due to the presence of intergranular bubbles. The steady-state heat conduction equation was solved in three-dimensional space using INL’s MOOSE finite element software, with which spacial...
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| Veröffentlicht in: | Journal of nuclear materials 2013-08, Vol.439 (1-3), p.117-122 |
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| container_title | Journal of nuclear materials |
| container_volume | 439 |
| creator | Millett, Paul C. Tonks, Michael R. Chockalingam, K. Zhang, Yongfeng Biner, S.B. |
| description | A parametric study has been performed that quantifies the effective change in grain boundary Kapitza resistance due to the presence of intergranular bubbles. The steady-state heat conduction equation was solved in three-dimensional space using INL’s MOOSE finite element software, with which spacial mesh adaptivity was used to resolve interfacial widths down to several nanometers while investigating bubble sizes up to a micrometer. Three critical parameters were systematically varied: the intergranular bubble radius, the fractional grain boundary bubble coverage, and the Kapitza resistance of the intact grain boundary. Using the simulation results, a mathematical model dependent on each of these parameters was developed to describe the effective Kapitza resistance. Furthermore, we illustrate how this model can be implemented in a fuel performance code to predict the temperature profile of a cylindrical fuel pellet. |
| doi_str_mv | 10.1016/j.jnucmat.2013.02.039 |
| format | Article |
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The steady-state heat conduction equation was solved in three-dimensional space using INL’s MOOSE finite element software, with which spacial mesh adaptivity was used to resolve interfacial widths down to several nanometers while investigating bubble sizes up to a micrometer. Three critical parameters were systematically varied: the intergranular bubble radius, the fractional grain boundary bubble coverage, and the Kapitza resistance of the intact grain boundary. Using the simulation results, a mathematical model dependent on each of these parameters was developed to describe the effective Kapitza resistance. 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Thermal use of fuels</subject><subject>Exact sciences and technology</subject><subject>Fission nuclear power plants</subject><subject>Fuels</subject><subject>Installations for energy generation and conversion: thermal and electrical energy</subject><subject>Nuclear fuels</subject><subject>Preparation and processing of nuclear fuels</subject><issn>0022-3115</issn><issn>1873-4820</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNqFkE2LFDEQhoMoOK7-BCEXwUu3-ex0n0QWv3BhL7vnkKQruxl60mMqvaD-eTPM4FVyCAlPvVX1EPKWs54zPnzY9_u8hYOrvWBc9kz0TE7PyI6PRnZqFOw52TEmRCc51y_JK8Q9Y0xPTO_In7vHAkDndICMac1uocEtYVtcbS-ka6T1ESjECKGmJ6A_3DHV344WwITV5QAn5v5W0IfiUqZ-3fLsSgKkYc21faX8QFOuUBqQW3ChfvN-AXxNXkS3ILy53Ffk_svnu-tv3c3t1-_Xn266II2onZTTEIXSZggBopnAOANKRa_0NIoQxwYI7Y2fWBty8kNsxwcu1MC1mrm8Iu_Pucey_twAqz0kDLAsLsO6oeVaKMW4YLKh-oyGsiIWiPZY0sGVX5Yze5Jt9_Yi255kWyZsk93q3l1aOGz-Yts0JPxXLIzS0oyn_I9nDtq-TwmKxZCgSZxTaYLtvKb_dPoL4yWaVA</recordid><startdate>20130801</startdate><enddate>20130801</enddate><creator>Millett, Paul C.</creator><creator>Tonks, Michael R.</creator><creator>Chockalingam, K.</creator><creator>Zhang, Yongfeng</creator><creator>Biner, S.B.</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>C1K</scope><scope>SOI</scope></search><sort><creationdate>20130801</creationdate><title>Three dimensional calculations of the effective Kapitza resistance of UO2 grain boundaries containing intergranular bubbles</title><author>Millett, Paul C. ; Tonks, Michael R. ; Chockalingam, K. ; Zhang, Yongfeng ; Biner, S.B.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c372t-3396f24576ccef79e7a7e44fb45982cf833925b7b90fec9b6f6f6bc1246154d13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Applied sciences</topic><topic>Controled nuclear fusion plants</topic><topic>Energy</topic><topic>Energy. 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| ispartof | Journal of nuclear materials, 2013-08, Vol.439 (1-3), p.117-122 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Applied sciences Controled nuclear fusion plants Energy Energy. Thermal use of fuels Exact sciences and technology Fission nuclear power plants Fuels Installations for energy generation and conversion: thermal and electrical energy Nuclear fuels Preparation and processing of nuclear fuels |
| title | Three dimensional calculations of the effective Kapitza resistance of UO2 grain boundaries containing intergranular bubbles |
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