A Kinetic Model for Vapor-liquid Flows

Abstract

The evaporation of a liquid slab into vacuum is studied by numerical solutions of the Enskog-Vlasov equation for a fluid of spherical molecules interacting by Sutherland potential. The main aim of this work is to obtain the structure of the vapor-liquid interface in non-equilibrium conditions as well as the distribution function of evaporating molecules. The results show that the distribution function of molecules crossing a properly defined vapor-liquid boundary is almost Maxwellian and that the vapor phase is reasonably well described by the Boltzmann equation with diffusive boundary condition.

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Document Details

Document Type
Technical Report
Publication Date
Jul 13, 2005
Accession Number
ADA445976

Entities

People

  • Aldo Frezzotti
  • Livio Gibelli
  • Silvia Lorenzani

Organizations

  • Polytechnic University of Milan

Tags

DTIC Thesaurus Topics

  • Boltzmann Equation
  • Boundaries
  • Collisions
  • Distribution Functions
  • Equations
  • Evaporation
  • Flow
  • Fluids
  • Heat Energy
  • Heat Of Vaporization
  • Latent Heat
  • Liquid Phases
  • Phase
  • Simulations
  • Temperature Gradients
  • Transitions
  • Vapor Phases

Readers

  • Combustion science or combustion engineering.
  • Fluid Mechanics and Fluid Dynamics.
  • Plasma Physics / Magnetohydrodynamics