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Proceedings Paper

Quantitative phase-field simulations of the wavelength selection during alloy redistribution transients
Author(s): Raul Benitez; Laureano Ramirez-Piscina
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Paper Abstract

We study the initial stages of a directional solidification experiment of a mixture by means of a non-variational phase field model with fluctuations. This model does not invoke fluctuation-dissipation theorem to account for the fluctuations statistics. We devote our attention to the transient regime during which concentration gradients are building and fluctuations act to destabilize the interface. To this end we calculate both the temporally dependent growth rate of each mode and the power spectrum of the interface evolving under the effect of fluctuations. Theoretical predictions are compared to phase field simulations.

Paper Details

Date Published: 25 May 2004
PDF: 10 pages
Proc. SPIE 5471, Noise in Complex Systems and Stochastic Dynamics II, (25 May 2004); doi: 10.1117/12.546679
Show Author Affiliations
Raul Benitez, Univ. Politecnica de Catalunya (Spain)
Laureano Ramirez-Piscina, Univ. Politecnica de Catalunya (Spain)


Published in SPIE Proceedings Vol. 5471:
Noise in Complex Systems and Stochastic Dynamics II
Zoltan Gingl, Editor(s)

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