Flow-induced morphological instabilities: The rotating disc

K. Brattkus*, S. H. Davis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


The morphological stability of a rotating and solidifying disc is investigated under the assumption that δ, the thickness of the viscous boundary layer, is much larger than δc, the thickness of the solute boundary layer. We find that axisymmetric disturbances with wavelengths comparable to δ respond to non-parallel flow effects and have stability characteristics quite different from disturbances in a parallel flow. These long waves are unstable because of the non-parallel flow and would decay without it. This analysis thus identifies a new mechanism of morphological change induced by flow.

Original languageEnglish (US)
Pages (from-to)385-396
Number of pages12
JournalJournal of Crystal Growth
Issue number4
StatePublished - Mar 1988
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry


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