Phase-field modeling of temperature gradient driven pore migration coupling with thermal conduction

Liangzhe Zhang; Michael R. Tonks; Paul C. Millett; Yongfeng Zhang; Karthikeyan Chockalingam; Bulent Biner

doi:10.1016/j.commatsci.2012.01.002

Phase-field modeling of temperature gradient driven pore migration coupling with thermal conduction

Liangzhe Zhang, Michael R. Tonks, Paul C. Millett, Yongfeng Zhang, Karthikeyan Chockalingam, Bulent Biner

Materials Research Institute (MRI)

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	161-165
Number of pages	5
Journal	Computational Materials Science
Volume	56
DOIs	https://doi.org/10.1016/j.commatsci.2012.01.002
State	Published - Apr 1 2012

All Science Journal Classification (ASJC) codes

Computer Science(all)
Chemistry(all)
Materials Science(all)
Mechanics of Materials
Physics and Astronomy(all)
Computational Mathematics

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title = "Phase-field modeling of temperature gradient driven pore migration coupling with thermal conduction",

abstract = "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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AU - Zhang, Liangzhe

AU - Tonks, Michael R.

AU - Millett, Paul C.

AU - Zhang, Yongfeng

AU - Chockalingam, Karthikeyan

AU - Biner, Bulent

PY - 2012/4/1

Y1 - 2012/4/1

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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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