Parallel Computation Of Single-needle Dendrites In 3D And Comparison
With Microgravity Experiment
Author(s)
Y. B. Altundas & G. Caginalp
Abstract
Parallel computation of single-needle dendrites
in 3D and comparison with microgravity
experiment
Y. B. Altundas" G. Caginalp2
Industrial Mathematics and its application, University of Minnesota,
USA
2~epartment of Mathematics, University of Pittsburgh, USA
Abstract
The dendritic growth of a single needle dendrite is studied in three dimensional
space by using a phase field model and parallel architecture. A large difference in
the length scales (capillarity length, the tip radius of the interface and etc.) poses
difficulty in the computation of dendritic growth. For succinonitrile (SCN), the
difference in the length scales is as high as lo-* cm to 1 cm. Consequently, a grid
of 5003 is used on the supercomputer to resolve these length scales. The parameters,
initial and boundary conditions are identical to those of the microgravity
experiments for succinonitrile (SCN). The numerical results are (i) consistent with
the experiments; (ii) compatible with the experimental conclusion that tip veloc
Keywords
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