A phase field study of the thermal migration of gas bubbles in UO2 nuclear fuel under temperature gradient

•Thermal diffusion and vapor transport mechanisms are implemented and verified.•Gas bubble shape change during migration are captured by the simulation.•Center hole formation in the UO2 nuclear fuel pellet is confirmed by the model. Phase field models are developed to study the gas bubble migration...

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Veröffentlicht in:	Computational materials science 2020-10, Vol.183, p.109817, Article 109817
Hauptverfasser:	Wang, Yafeng, Xiao, Zhihua, Hu, Shenyang, Li, Yulan, Shi, San-Qiang
Format:	Artikel
Sprache:	eng
Schlagworte:	Gas bubble migration gas bubble migration, quantitative phase-field modeling, temperature gradient NUCLEAR FUEL CYCLE AND FUEL MATERIALS Quantitative phase-field modeling Temperature gradient
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