Orientation Gradients in Rapidly Solidified Pure Aluminum Thin Films: Comparison of Experiments and Phase-Field Crystal Simulations
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36 MATERIALS SCIENCE↗
Engineering topics
Provatas, Nikolas
Publications and source records attributed to Provatas, Nikolas.
Phase field modeling of rapid resolidification of Al-Cu thin films
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Pinomaa, Tatu (ORCID:0000000226451729)↗
Adaptive-Grid Methods for Phase Field Models of Microstructure Development
In this work the authors show how the phase field model can be solved in a computationally efficient manner that opens a new large-scale simulational window on solidification physics. Our method uses a finite element, adaptive-grid formulation, and exploits the fact that the phase and temperature fields vary significantly only near the interface. We illustrate how our method allows efficient simulation of phase-field models in very large systems, and verify the predictions of solvability theory at intermediate undercooling. We then present new results at low undercoolings that suggest that solvability theory may not give the correct tip speed in that regime. We model solidification using the phase-field model used by Karma and Rappel.
Provatas, Nikolas↗