Nonlinear AND density-dependent flow

Dear all, I am trying to combine nonlinear flow (Forchheimer’s law) with density-dependent flow (density changes because of concentration gradient). I was able to model nonlinear flow as a GROUNDWATER_FLOW process (Nori, thank you once again!), and density-dependent flow as a LIQUID_FLOW process (by the way, my results for the Elder problem with OpenGeosys were excellent; you people do a GREAT work, thank you!). My problem now is that I could not model density-dependent flows as GROUNDWATER_FLOW processes (natural convection was zero). Further, I could not model nonlinear flow as LIQUID_FLOW process (flow was always Darcian).Accordingly, I can’t use either GROUNDWATER_FLOW or LIQUID_FLOW process. Is there anything that I could try to combine nonlinear flow with density-dependent flow? Any help will be greatly appreciated!

Hi,

sorry it's my fault that the nonlinear flow has not been supported in LIQUID_FLOW. I've mad a PR for this

After the PR being merged, you can checkout "master" branch there and try. (you need to compile it by yourself)

I don't think we have time to work on extending GROUNDWATER to support density dependent flow, because it requires some effort in coding.

Best,
Nori

···

On 07/07/2016 08:03 PM, John N.E. Papaspyros wrote:

Dear all, I am trying to combine nonlinear flow (Forchheimer's law) with
density-dependent flow (density changes because of concentration
gradient). I was able to model nonlinear flow as a GROUNDWATER_FLOW
process (Nori, thank you once again!), and density-dependent flow as a
LIQUID_FLOW process (by the way, my results for the Elder problem with
OpenGeosys were excellent; you people do a GREAT work, thank you!). My
problem now is that I could not model density-dependent flows as
GROUNDWATER_FLOW processes (natural convection was zero). Further, I
could not model nonlinear flow as LIQUID_FLOW process (flow was always
Darcian).Accordingly, I can't use either GROUNDWATER_FLOW or LIQUID_FLOW
process. Is there anything that I could try to combine nonlinear flow
with density-dependent flow? Any help will be greatly appreciated!

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Norihiro Watanabe, Dr.-Ing.
Department of Environmental Informatics (ENVINF)
Wissenschaftler

Helmholtz-Zentrum für Umweltforschung GmbH - UFZ
Helmholtz Centre for Environmental Research GmbH - UFZ
Permoserstraße 15 / 04318 Leipzig / Germany

norihiro.watanabe@ufz.de / http://www.ufz.de
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Dear Nori, for yet one more time I thank you for your constant eagerness to help! OK, I will try to build the project, and I will report on the results of the patch. I wish you all the best!

John