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Finite element analysis of multicomponent two‐phase flows with interphase mass and momentum transport
Author(s) -
Schunk P. R.,
Rao R. R.
Publication year - 1994
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.1650180903
Subject(s) - interphase , mass transfer , momentum (technical analysis) , condensation , mechanics , classification of discontinuities , finite element method , evaporation , materials science , two phase flow , heat transfer , thermodynamics , phase (matter) , multiphase flow , flow (mathematics) , chemistry , physics , mathematics , mathematical analysis , genetics , organic chemistry , finance , economics , biology
The application of the finite element method to multiphase flow problems with interphase mass and heat transfer is described. A general forinulation is used that determines the position of the interfacial boundary and allows for multiple solvents, differential volatilities and concentration‐ and temperature‐dependent thermophysical properties. Species phase change and the dramatic volume change that acompanies interphase mass transfer make implementation of the theory challening, since these events lead to discontinuous velocities and concentrations at phase boundaries. These discontinuities are especially large in processes involving rapid evaporation or condensation. As examples we examine the effects of rapid drying on film and fibre formation of sol‐‐gel materials, which are often laden with volatile species.