|Author||Zwick, S. A.|
|Source||United States Department of Energy Office of Scientific and Technical Information|
|Publisher||American Institute of Physics (AIP)|
|Subject Keyword||CHEMISTRY ♦ BOLTZMANN STATISTICS ♦ DISTRIBUTION ♦ EVAPORATION ♦ LIQUIDS ♦ MAXWELL DISTRIBUTION ♦ MOLECULES ♦ PRESSURE ♦ SURFACES ♦ THERMODYNAMICS ♦ VAPORS ♦ VELOCITY|
|Abstract||A simple kinetic model is employed to investigate nonequilibrium evaporation from a liquid. Molecules are assumed to evaporate into a (one-sided) Maxwellian velocity distribution at the liquid surface. Molecules reaching the surface from the vaper are assumed to form part of an ellipsoidal velocity distribution. Of the molecules approaching the liquid at the interface only the fraction alpha condenses there; the remainder presumably undergoes specular reflection back into the vapor. By equating physical conditions at the surface with conditions in the vapor, the vapor pressure can be related to that which would prevail at equilibrium, as a function of the surface accommodation coefficient alpha and the mean velocity u of the vapor relative to the interface.|
|Learning Resource Type||Article|
|Publisher Department||Univ. of California, Livermore|
|Journal||Journal of Applied Physics|
|Organization||Univ. of California, Livermore|
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