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Home Archives Thermal Letter Officers Future meetings Assembly for International Heat Transfer Conferences

ISBN Print: 0-89116-130-9

ISSN: 2377-424X

International Heat Transfer Conference 6
August, 7-11, 1978, Toronto, Canada

THEORETICAL BASES OF THE DRIFT-FLUX FIELD EQUATIONS AND VAPOR DRIFT VELOCITY

Get access DOI: 10.1615/IHTC6.680
pages 339-344

Abstract

The field equations forming the basis of the drift-flux (DF) model of transient two-phase flow are shown to be obtainable from a representative set of two-fluid (TF) or separated flow field equations. The simplifying assumptions required to yield the DF field equations are explicitly accounted for. A general expression for the transient velocity difference between phases is obtained from which the vapor drift velocity may be derived. A method of extending the usefulness of empirical steady-state vapor drift velocity correlations is suggested.
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