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Evaporation under an impinging jet: A numerical model
Author(s) -
Mujumdar A. S.,
Li Y.K.,
Douglas W. J. M.
Publication year - 1980
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450580405
Subject(s) - evaporation , laminar flow , mechanics , jet (fluid) , isothermal process , thermodynamics , mass transfer , heat transfer , plane (geometry) , constant (computer programming) , conservation of mass , flow (mathematics) , materials science , chemistry , physics , mathematics , geometry , computer science , programming language
A numerical model is presented to predict the flow and coupled heat and mass transfer characteristics under a round laminar jet impinging normally on a plane wall maintained at a constant wet‐bulb temperature. The full Navier‐Stokes energy and conservation of species equations in their primitive form are solved using a finite difference technique for the case of a jet of hot humid air impinging on an isothermal wet surface. It is found that a modified Sherwood number defined in terms of a log‐mean, mole fraction driving potential renders the former insensitive to the evaporation rate.
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