|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Algorithm Development in Materials Science and Engineering
||A New Phase-field Model with Anisotropic Interface Width for the Highly Anisotropic Growth of Ice Dendrites
||Gilles Demange, Renaud Patte, Helena Zapolsky
|On-Site Speaker (Planned)
The growth of ice crystals is a famous example of highly anisotropic dendrite growth: ice dendrites display at the same time a faceted aspect, and an extreme aspect ratio associated with a flat morphology. This flat shape is very hard to reproduce with usual models for solidification. To address this challenging issue, we present in this work an innovative procedure for slowly growing interfaces, which equips our new phase-field model (PFM) for the highly anisotropic growth of ice crystals . This procedure relies on the fine tuning of the interface width in the PFM, which in turn accounts for the strongly reduced particle diffusion and attachment at the crystal surface in the slow growth direction. We show that this approach is capable of reproducing some fine features of ice crystal growth, such as terrace growth.
||Planned: Supplemental Proceedings volume