TY - JOUR
T1 - Phase-field modeling of temperature gradient driven pore migration coupling with thermal conduction
AU - Zhang, Liangzhe
AU - Tonks, Michael R.
AU - Millett, Paul C.
AU - Zhang, Yongfeng
AU - Chockalingam, Karthikeyan
AU - Biner, Bulent
N1 - Funding Information:
The authors would like to thank Derek Gaston and Cody Permann from Idaho National Laboratory for their assistance with MOOSE development in support of MARMOT . The authors also thank Dr. Xianming (David) Bai for his recommendations and advices. This work was funded by the Department of Energy, Nuclear Energy Advanced Modeling and Simulation program. This manuscript has been authored by Battelle Energy Alliance, LLC under Contract No. DE-AC07-05ID14517 with the US Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a nonexclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes.
PY - 2012/4
Y1 - 2012/4
N2 - Pore migration in a temperature gradient (Soret effect) is investigated by a phase-field model coupled with a heat transfer calculation. Pore migration is observed towards the high temperature domain with velocities that agree with analytical solution. Due to the low thermal conductivity of the pores, the temperature gradient across individual pores is increased, which in turn, accelerates the pore migration. In particular, for pores filled with xenon and helium, the pore velocities are increased by a factor of 2.2 and 2.1, respectively. A quantitative equation is then derived to predict the influence of the low thermal conductivity of pores.
AB - Pore migration in a temperature gradient (Soret effect) is investigated by a phase-field model coupled with a heat transfer calculation. Pore migration is observed towards the high temperature domain with velocities that agree with analytical solution. Due to the low thermal conductivity of the pores, the temperature gradient across individual pores is increased, which in turn, accelerates the pore migration. In particular, for pores filled with xenon and helium, the pore velocities are increased by a factor of 2.2 and 2.1, respectively. A quantitative equation is then derived to predict the influence of the low thermal conductivity of pores.
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U2 - 10.1016/j.commatsci.2012.01.002
DO - 10.1016/j.commatsci.2012.01.002
M3 - Article
AN - SCOPUS:84862826021
VL - 56
SP - 161
EP - 165
JO - Computational Materials Science
JF - Computational Materials Science
SN - 0927-0256
ER -