Justification of the drift-flux model for two-phase flow in a circular pipeстатья
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Дата последнего поиска статьи во внешних источниках: 27 ноября 2016 г.
Авторы:
Osiptsov A.A. ,
Sin’kov K.F. ,
Spesivtsev P.E.
Журнал:
Fluid Dynamics
Том:
49
Номер:
5
Год издания:
2014
Издательство:
Maik Nauka/Interperiodica Publishing
Местоположение издательства:
Russian Federation
Первая страница:
614
Последняя страница:
626
DOI:
10.1134/S0015462814050081
Аннотация:
A flow of a gas-liquid dispersed mixture in a circular pipe with a variable inclination to the horizon, as applied to oil and gas flows in wells, is considered. Within the framework of a multi- fluid approach, the equations of an asymptotic drift-flux model, which contains an algebraic relation between the phase velocities and one momentum equation for the volume-averaged velocity of the mixture, are derived. It is shown that the drift-flux model in this formulation strictly follows from the balance laws under assumption of inertialess velocity slip of the phases in case of validity of one of the following conditions: (i) the dispersed-phase volume fraction is small; (ii) the phase velocity slip may be neglected; or (iii) the flow regime is inertialess and the acceleration of the mixture can be neglected. A numerical algorithm based on the SIMPLE method is implemented for solving the obtained equations of the drift-flux model. The possibility of modeling the gravitational segregation and the pressure buildup in a shut-in well and transient slug flows is demonstrated. © 2014, Pleiades Publishing, Ltd.
Добавил в систему:
Синьков Константин Федорович