Hi OGS-Users,
I'm simulating a section of river sediment modeled by a structured mesh
with a sinusoidal pressure boundary on top and a source term at the
bottom. When I calculate the interfacial flux over an arbitrary
horizontal cross section, I expect it to be equal to the source term at
the bottom (3.667e-6). What I actually get for the 25 layers of my
structured mesh is:
layer flux through layer
24 0.0107254663517 (pressure boundary)
23 0.000146936095482
22 7.15915546532e-05
21 4.38169573139e-05
20 2.43636480998e-05
19 6.28636072463e-06
18 3.4735641863e-06
17 3.64290608001e-06
2-16 ~3.667e-6
1 3.66709237359e-06
0 0.0176977869523 (source term = 3.667e-6)
i.e. the uppermost layer (neglecting the boundary layer itself) has a
continuity error of 40 * expected flux. Unfortunately, this layer is the
most interesting to me. Do you know a way to reduce this error?
Find the case attached. Sorry for 5MB attachment, but well, 21st century...
I calculated the interfacial flux via python
("calculateInterfacialFlux.py") but similar effects can be seen using
paraview->slice->SurfaceFlow
Any ideas?
Best regards
Gerrit
hzSim.zip (4.9 MB)
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Gerrit Laube
Department Hydrogeologie
Department Hydrogeology
Helmholtz-Zentrum für Umweltforschung GmbH - UFZ
Helmholtz Centre for Environmental Research GmbH - UFZ
Permoserstraße 15 / 04318 Leipzig / Germany
Telefon +49 341 235 1996
gerrit.laube@ufz.de / www.ufz.de
Sitz der Gesellschaft: Leipzig
Registergericht: Amtsgericht Leipzig, Handelsregister Nr. B 4703
Vorsitzender des Aufsichtsrats: MinDirig Wilfried Kraus
Wissenschaftlicher Geschäftsführer: Prof. Dr. Georg Teutsch
Administrative Geschäftsführerin: Dr. Heike Graßmann
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