Dear Dmitry,
2p2c can handle gas, yes. As for the equilibrium (I suppose you want to
fix mass fractions), you can have a look at the fluidsystem brineco2 and
how the fugacityCoefficient() method can be manipulated to fix mass
fractions to a certain value:
https://git.iws.uni-stuttgart.de/dumux-repositories/dumux/-/blob/master/dumux/material/fluidsystems/brineco2.hh
Dumux calculates equilibrium mole fractions by setting the fugacity of a
component in one phase equal to the fugacity of the same component in
the other phase. For two components that results in two equations with
four unknowns (i.e., the mole fractions). To close the system of
equation the sum of the mole fractions of a phase has to be one.
I hope that answers your question.
Best wishes,
Beatrix
On 17.03.21 11:50 AM, Dmitry Pavlov wrote:
Hello,
After a series of useful simulations of oil + water + some soluble
components, I am now facing a task of oil + gas simulation. It is a
simplification, but, as far as I understand, a more-or-less common
one: water is considered immobile (hence nonexistent), gas in injected
into oil; some gas gets immediately dissolved in oil, and the ratio of
"gas in gas phase" / "gas in oil phase" is constant everywhere at all
times. I call this an equilibrium, hoping this is the correct term. No
temperature is considered.
I would be very grateful for pointers as to what DuMux models and
classes I can use for this task.
Can 2p2c model handle gas? Is there an easy way to naturally write the
aforementioned equilibrium into the equations? Should I deal with the
fugacityCoefficient() method (which I honestly do not fully understand
now) to have the equilibrium maintained?
Best regards,
Dmitry
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--
*******************************************************
Beatrix Becker
Department of Hydromechanics and Modelling of Hydrosystems (LH2)
Institute for Modelling Hydraulic and Environmental Systems (IWS), University
of Stuttgart
www.hydrosys.uni-stuttgart.de
email: [email protected]
Pfaffenwaldring 61
70569 Stuttgart
Tel.: ++49 711 / 685-60500
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