Study of evaporative convection in an open cavity under shear stress flow

Carlo S. Iorio, Olga Goncharova, Oleg A. Kabov

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

When a layer of volatile liquid is exposed to a shear flow of inert gas, thermal patterns, in the form of interfacial ripples and bulk plumes, are created by the combined action of evaporative, shear-driven and surface-tension-driven instabilities. The topology of the interfacial thermal patterns is mainly influenced by the geometry of the evaporating surface, the thickness of the evaporating layer, the intensity of the shear flow and by the physic-chemical properties of the working fluid. In this paper, by means of numerical simulations, we focused our attention on the dynamics of the interfacial thermal patterns for different working fluids and thicknesses of the volatile liquid layer. This study has been performed in the frame of the ESA sponsored Space Program on heat and mass transfer CIMEX-1. The choice of the fluids-ethyl alcohol and FC72 (n-perfluorohexane)-the reference values for the inert gas flow rate, the thickness of the liquid layer as well as the geometrical features of the computational domain correspond exactly to the ones foreseen for the CIMEX-1 experiment. However, the main conclusions can be considered of more general validity.

Original languageEnglish
JournalMicrogravity Science and Technology
Volume21
Issue numberSUPPL. 1
DOIs
Publication statusPublished - Aug 2009

Fingerprint

Shear Stress
shear stress
Convection
Shear stress
Cavity
convection
Shear flow
Inert gases
cavities
Fluids
working fluids
Volatiles
Liquids
Liquid
Shear Flow
shear flow
Fluid
rare gases
liquids
space programs

Keywords

  • Convection
  • Evaporative convection
  • Heat and mass transfer
  • Thermal instability
  • Thermo-capillary convection

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)
  • Modelling and Simulation
  • Applied Mathematics

Cite this

Study of evaporative convection in an open cavity under shear stress flow. / Iorio, Carlo S.; Goncharova, Olga; Kabov, Oleg A.

In: Microgravity Science and Technology, Vol. 21, No. SUPPL. 1, 08.2009.

Research output: Contribution to journalArticle

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