Phase-field modeling of temperature gradient driven pore migration coupling with thermal conduction
| Autor: | Paul C. Millett, Bulent Biner, Liangzhe Zhang, Karthikeyan Chockalingam, Michael R. Tonks, Yongfeng Zhang |
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| Rok vydání: | 2012 |
| Předmět: |
Quantitative Biology::Biomolecules
Physics::Biological Physics General Computer Science General Physics and Astronomy chemistry.chemical_element Thermodynamics General Chemistry Thermal conduction Thermophoresis Physics::Geophysics Quantitative Biology::Subcellular Processes Computational Mathematics Temperature gradient Xenon Thermal conductivity chemistry Mechanics of Materials Phase (matter) Heat transfer General Materials Science Helium |
| Zdroj: | Computational Materials Science. 56:161-165 |
| ISSN: | 0927-0256 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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