Accession Number : AD0664061

Title :   UTILITY OF THE STAGNANT FILM CONCEPT OF MASS TRANSFER IN CRYSTAL GROWTH,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Wilcox,William R.

Report Date : OCT 1967

Pagination or Media Count : 21

Abstract : Crystal growth generates a flow of material toward and through the crystal surface. An investigation is made of the effect of this interfacial flow on the thickness of the imaginary stagnant layer of fluid through which mass transfer must take place. The film thickness is found to be relatively independent of interfacial flow for laminar-free convection of a liquid on a vertical flat plate and for a rotating disk in a gas. It varies significantly, however, for other situations, especially with laminar-forced convection of a gas over a flat plate. Mass-transfer calculations, taking into account interfacial flow, are outlined for solution crystal growth and for controlled solidification. (Author)

Descriptors :   (*CRYSTAL GROWTH, MASS TRANSFER), SOLUTIONS(MIXTURES), TRANSPORT PROPERTIES, FILMS, SURFACE PROPERTIES, HYDRODYNAMICS, FREEZING, GAS FLOW, LAMINAR FLOW

Subject Categories : Physical Chemistry
      Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE