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  • http://hdl.handle.net/10402/era.25303
  • Comparative Surface Thermodynamic Analysis of New Fluid Phase Formation in Various Confining Geometries
  • Zargarzadeh, Leila
  • English
  • confined fluid
    thermodynamic stability analysis
    confining geometry
    capillary condensation
    capillary evaporation
    liquid bridge
    vapour bridge
  • Jan 29, 2012 7:01 PM
  • Thesis
  • English
  • Adobe PDF
  • 6288453 bytes
  • For a pure bulk (unconfined) fluid, phase transition happens at the saturation pressure. In contrast, for a fluid inside a confinement of small size (commonly below micrometers), vapour and liquid coexistence may happen at pressures other than the saturation pressure; or an expected phase transition might be prevented due to tight confinement of a specific geometry. Practical examples include fluids confined in miniaturized systems, catalysts, membranes, and reservoir rocks. This thesis makes a comparative study, using thermodynamic stability analysis, of new phase formation out of a confined fluid, for three different confinement geometries of conical pit, plate‒plate, and sphere‒plate. Both the formation of liquid out of vapour and vapour out of liquid are studied for each geometry. Effects of different parameters: the equilibrium contact angle, the confinement solid separation, and the sphere size for the sphere‒plate case, are investigated. The conclusions of this comparative study are extendable to other geometries.
  • Master's
  • Master of Science
  • Department of Chemical and Materials Engineering
  • Chemical Engineering
  • Spring 2012
  • Elliott, Janet A.W. (Chemical and Materials Engineering)
  • Thundat, Thomas (Chemical and Materials Engineering)
    Bhattacharjee, Subir (Mechanical Engineering)
    Zeng, Hongbo (Chemical and Materials Engineering)
    Xu, Zhenghe (Chemical and Materials Engineering)
    Elliott, Janet A.W. (Chemical and Materials Engineering)