Natural and Marangoni convection in partially miscible liquid systems

Chiara Piccolo, Marcello Lappa, Luigi Carotenuto, Raffaele Savino

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Abstract

This article deals with laboratory experiments and numerical simulations of convection and dissolution phenomena in partially miscible liquids. Transparent organic liquids (Cyclohexane and Methanol) are considered as a model system to study problems occurring during solidification of metal alloys with a miscibility gap. Non invasive optical techniques are used to study stable and unstable convective solutal plumes, that are produced at the tip of a liquid droplet dissolving in a non isothermal partially miscible liquid. Numerical simulations explain the observed behavior and capture additional insights into the physics of the phenomenon, following from a delicate balance between counteracting buoyancy and surface tension-driven flows.
Original languageEnglish
Title of host publication55th Congress of the International Astronautical Federation, Vancouver, Canada, Oct. 4-8, 2004
Pages4817-4827
Number of pages11
Volume7
Publication statusPublished - 8 Oct 2004
Event55th International Astronautical Congress - Vancouver, Canada
Duration: 4 Oct 20048 Oct 2004

Conference

Conference55th International Astronautical Congress
CountryCanada
CityVancouver
Period4/10/048/10/04

Keywords

  • partially miscible liquid systems
  • Marangoni convection
  • natural convection
  • numerical simulations
  • dissolution phenomena

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