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Quantitative phase-field modeling for dilute alloy solidification involving diffusion in the solid

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Title: Quantitative phase-field modeling for dilute alloy solidification involving diffusion in the solid
Authors: Ohno, Munekazu Browse this author →KAKEN DB
Matsuura, Kiyotaka Browse this author →KAKEN DB
Issue Date: Mar-2009
Publisher: American Physical Society
Journal Title: Physical Review E
Volume: 79
Issue: 3
Start Page: 031603
Publisher DOI: 10.1103/PhysRevE.79.031603
PMID: 19391950
Abstract: An antitrapping current scheme for quantitative phase-field model A. Karma, Phys. Rev. Lett. 87, 115701 2001 is extended to solidification process in a dilute binary alloy system involving diffusion in the solid. It is demonstrated in an asymptotic analysis that in the case of an arbitrary value of the solid diffusivity, five types of constraints exist between interpolating functions used in the phase-field model, which need to be satisfied simultaneously to eliminate all anomalous interface effects. Then, the authors present an appropriate form of the antitrapping current term for the two-sided case to remove all the spurious effects. The convergence test of the output with respect to the interface thickness was carried out for the isothermal dendrite growth process, which demonstrates an excellent performance of the present model.
Rights: © 2009 American Physical Society
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 大野 宗一

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