Conference proceeding
An interface tracking method applied to morphological evolution during phase change
27th Thermophysics Conference
1992
DOI: 10.2514/6.1992-2902
Abstract
The focus of this work is the numerical simulation of interface motion during solidification of pure materials. First, we assess the applicability of the oft-used quasi-stationary approximation for interface motion. It is seen that such an approximation results in poor accuracy for non-trivial Stefan numbers. Solution of the full set of equations including grid movement terms yields close agreement with analytical results. Next, a generic interface tracking procedure is designed, which overcomes restrictions of single-valuedness of the interface imposed by commonly used mapping methods. This method incorporates with ease interface phenomena involving curvature, which assume importance at the smaller scales of a deformed interface. The method is then applied to study the development of a morphologically unstable phase interface. The issue of appropriate scaling has been addressed. The Gibbs-Thomson effect for curved interfaces has been included. The evolution of the interface, with the competing mechanisms of undercooling and surface tension is found to culminate in tip-splitting, cusp formation and persistent cellular development.
Details
- Title: Subtitle
- An interface tracking method applied to morphological evolution during phase change
- Creators
- W. Shyy - University of FloridaH. Udaykumar - University of FloridaS.-J. Liang - University of Florida
- Resource Type
- Conference proceeding
- Publication Details
- 27th Thermophysics Conference
- DOI
- 10.2514/6.1992-2902
- Language
- English
- Date published
- 1992
- Academic Unit
- Injury Prevention Research Center; Mechanical Engineering
- Record Identifier
- 9984196509802771
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