Mathematical model of nonisothermal multiphase binary mixture flow through a porous medium

被引:0
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作者
A. A. Afanasyev
机构
来源
Fluid Dynamics | 2011年 / 46卷
关键词
nonisothermal flow through a porous medium; compositional model of flow through a porous medium; phase transitions; multicomponent mixture; dispersion analysis;
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摘要
A model of nonisothermal binary mixture flow through a porous medium, applicable over a wide range of thermobaric conditions, including temperatures higher than the critical mixture temperature, is proposed. A nonclassical approach used for modeling the mixture properties makes it possible to uniformly describe its single-, two- and three-phase thermodynamic equilibria and the corresponding flows under sub- and supercritical thermodynamic conditions. The wide application of thermodynamic methods to determining the real mixture properties leads to a nonstandard mathematical model in which the conservation laws are closed with a conditional extremum problem, not finite or differential equations. A dispersion analysis of the model equations is performed and the characteristic velocities in zones of different mixture phase states are determined.
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页码:80 / 89
页数:9
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