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 conferencePaper

1 Citation (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 (2mm 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 2.4mm, four vortexes were generated on the longitudinal plane with a typical velocity of 15mm/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. Increase in the height of column and/or increase in the absolute value of applied temperature difference lead to increase in fluid velocity lineally in this calculation range.

Original languageEnglish
Pages71-80
Number of pages10
Publication statusPublished - 1997 Dec 1
EventProceedings of the 1997 TMS Annual Meeting - Orlando, FL, USA
Duration: 1997 Feb 101997 Feb 13

Other

OtherProceedings of the 1997 TMS Annual Meeting
CityOrlando, FL, USA
Period97/2/1097/2/13

ASJC Scopus subject areas

  • Geology
  • Metals and Alloys

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    Takasu, T., Itou, H., Nakamura, T., & Toguri, J. M. (1997). Observation and calculation of Marangoni convection induced thermally in a molten salt. 71-80. Paper presented at Proceedings of the 1997 TMS Annual Meeting, Orlando, FL, USA, .