Experimental study of cold plume instability in large Prandtl number Czochralski melt: Parametric dependences and scaling laws

E. Miroshnichenko, E. Kit, A. Yu Gelfgat

Research output: Contribution to journalArticlepeer-review

Abstract

A parametric experimental study of the cold plume instability that appears in the large-Prandtl-number Czochralski melt flows is reported. The critical temperature difference (the critical Grashof number) and the frequency of appearing oscillations were measured for varying Prandtl numbers, aspect ratios of the melt, and crystal/crucible radii ratio. The measurements were carried out by two independent and fully non-intrusive experimental techniques. The results are reported as dimensional and dimensionless parametric dependences, and then are joined into relatively simple empirical relations showing how the critical Grashof number and the frequency of emerging oscillations depend on other parameters.

Original languageEnglish
Pages (from-to)38-42
Number of pages5
JournalJournal of Crystal Growth
Volume438
DOIs
StatePublished - 15 Mar 2016

Keywords

  • A1. Convection
  • A1. Fluid flows
  • A1. Heat transfer
  • A2. Czochralski method

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