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

Research output: Contribution to journalArticlepeer-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 languageEnglish (US)
Pages (from-to)161-165
Number of pages5
JournalComputational Materials Science
Volume56
DOIs
StatePublished - 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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