ICAMS / Interdisciplinary Centre for Advanced Materials Simulation
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Pattern formation in constrained dendritic growth with solutal buoyancy

I. Steinbach.

Acta Materialia, 57, 2640-2645, (2009)

Abstract
Competing self-organization between the solidification pattern and the convection pattern in a directional solidification environment is investigated theoretically and by phase-field simulations. Melt flow introduces a mode of transport with broken symmetry dependent on the direction of growth relative to the vector of gravity. A stable and an unstable regime can be distinguished. The interaction between spacing selection and convection leads to a new type of scaling that explains results from phase-field simulations and solidification experiments under enhanced gravity.


DOI: 10.1016/j.actamat.2009.02.004
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