Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 134, Issue 4, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3537973
Keywords
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Funding
- U.S. Department of Energy, Office of Science Scientific Discovery
- Battelle Energy Alliance [DE-AC07-05ID14517]
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Two-dimensional dendritic growth due to solute precipitation was simulated using a phase-field model reported earlier [Z. Xu and P. Meakin, J. Chem. Phys. 129, 014705 (2008)]. It was shown that diffusion-limited precipitation due to the chemical reaction at the solid-liquid interface has similarities with diffusion-limited aggregation (DLA). The diffusion-limited precipitation is attained by setting the chemical reaction rate much larger compared to the solute diffusion to eliminate the effect of the interface growth kinetics. The phase-field simulation results were in reasonable agreement with the analytical solutions. The fractal solid fingers can be formed in the diffusion-limited precipitation and have a fractal dimension measured d(f) = 1.68, close to 1.64, the fractal dimensionality of large square lattice DLA clusters. (C) 2011 American Institute of Physics. [doi:10.1063/1.3537973]
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