Observation and calculation of Marangoni convection induced thermally in a molten salt

T. Takasu, H. Itou, T. Nakamura, J. M. Toguri

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)

Abstract

Marangoni convection has a large effect on materials processing since it remarkably enhances heat and mass transport near a free interface. To have a better understanding of the behavior of Marangoni convection in molten salts, observation and calculation of the thermal convection in a column held between a pair of Pt disks (2 mm in diameter) fixed to hot thermocouples, were carried out. Calculated flow patterns and absolute values of fluid velocity agreed well with the observed results. When the temperatures of both disks were set equal and the height of liquid column was 2.4 mm, four vortices were generated on the longitudinal plane with a typical velocity of 15 mm/s. From the calculated isothermal lines, the behavior of the enhanced heat transport was obvious; fluid heated at the disks was conveyed to the free surface and the cooled fluid at the surface was conveyed to the inner region.

Original languageEnglish
Pages (from-to)285-292
Number of pages8
JournalCanadian Metallurgical Quarterly
Volume37
Issue number3-4
DOIs
Publication statusPublished - 1998
EventProceedings of the 1996 Symposium on the Computational Fluid Dynamics and Heat/Mass Transfer Modeling (CFD and HMTM) in the Metallurgical Industry - Montreal, Can
Duration: 1996 Aug 11996 Aug 1

ASJC Scopus subject areas

  • Metals and Alloys
  • Industrial and Manufacturing Engineering

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