Thermocapillary effects in liquid systems of variable mass confined in a non-isothermal container

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)309-332
Journal / PublicationTransactions of the Canadian Society for Mechanical Engineering
Issue number3-4
Publication statusPublished - 2010
Externally publishedYes


Interface deformation and thermocapillary rupture in a non-isothermal cavity with free upper surface is investigated. Temperature variations along the interface are induced by differentially heated walls. The dynamics of the process is modulated by changing mass of the liquid. The results determined for the large Biot and zero Marangoni numbers show the existence of limit points beyond processes leading to the interface rupture set in. Evolution of the limit point as a function of the liquid mass is investigated. The topology of the flow field is very similar regardless of whether the cavity is over-filled or only partially filled. It is shown that the cavity over-filling may, in general, extend the range of admissible capillary numbers and thus it can be used as a tool for prevention of rupture.

Research Area(s)

  • Containerless materials processing, Liquid interfaces, Thermocapillary convection

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