Thermocapillary motion in a spinning vaporizing droplet

David Lozinski, Moshe Matalon

Research output: Contribution to journalArticlepeer-review


The thermocapillary motion generated within a spinning vaporizing droplet is described. Rotation induces a swirling now in the surrounding gas. This in turn establishes a nonuniform vapor concentration and temperature at the droplet surface. An internal circulation is thus created from the interfacial temperature gradients. This internal motion, described in the limits of small Reynolds and Marangoni numbers, appears as a pair of toroidal vortices. Depending on whether the gaseous Lewis number, Le, is less than or greater than one, the temperature along the surface peaks at either the poles or the equator of the droplet. Consequently, the direction of the internal circulation is from the poles to the equator or vice versa.

Original languageEnglish (US)
Pages (from-to)1596-1601
Number of pages6
JournalPhysics of Fluids A
Issue number7
StatePublished - 1992
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Mechanics of Materials
  • Computational Mechanics
  • Fluid Flow and Transfer Processes
  • Engineering(all)


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