Conference proceeding
Phase-Field Simulation of Solidification With Density Change
Heat Transfer, Volume 3, Vol.375(3), pp.519-525
ASME 2004 International Mechanical Engineering Congress and Exposition, Anaheim, California, USA, Nov. 13 - 19, 2004
01/01/2004
DOI: 10.1115/IMECE2004-60875
Abstract
Phase-field models of solidification with convection often assume the existence of a single (mixture) velocity at any location inside the diffuse interface, and the phase-field, φ, is advected by this mixture velocity. In this paper, the advection of the phase-field is examined for a one-dimensional normal flow to a solidification front induced by a density difference between the solid and liquid. It is found that the results from a phase-field model that assumes a single velocity inside the diffuse interface are generally not in agreement with the sharp interface condition for the kinetic undercooling of the front in the presence of unequal densities, regardless of the interface width. By introducing a two-phase approach, where the solid and liquid are assumed to coexist inside the diffuse interface with different velocities, good agreement with the sharp interface condition is obtained irrespective of the density ratio between the two phases.
Details
- Title: Subtitle
- Phase-Field Simulation of Solidification With Density Change
- Creators
- Ying Sun - University of IowaChristoph Beckermann - University of Iowa
- Resource Type
- Conference proceeding
- Publication Details
- Heat Transfer, Volume 3, Vol.375(3), pp.519-525
- Conference
- ASME 2004 International Mechanical Engineering Congress and Exposition, Anaheim, California, USA, Nov. 13 - 19, 2004
- Publisher
- ASMEDC
- DOI
- 10.1115/IMECE2004-60875
- ISSN
- 0272-5673
- Language
- English
- Date published
- 01/01/2004
- Academic Unit
- Mechanical Engineering
- Record Identifier
- 9984196622102771
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