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Constitutive equation for vapor drift velocity in two‐phase annular flow
Author(s) -
Ishii Mamoru,
Chawla T. C.,
Zuber Novak
Publication year - 1976
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690220210
Subject(s) - constitutive equation , mechanics , momentum (technical analysis) , drift velocity , flow (mathematics) , phase (matter) , two phase flow , range (aeronautics) , evolution equation , vector field , field (mathematics) , thermodynamics , physics , classical mechanics , materials science , mathematics , mathematical analysis , electric field , finance , composite material , quantum mechanics , finite element method , pure mathematics , economics
A constitutive equation for a vapor drift velocity which specifies the relative motion between phases in the drift flux model is developed for two‐phase annular flows. The constitutive equation is derived by taking into account the interfacial geometry, the body force field, and the interfacial momentum transfer, since these macroscopic effects govern the two‐phase diffusions. A comparison of the model with three sets of experimental data obtained over a wide range of flow parameters shows a satisfactory agreement.