Hi Timo,
Thank you for your answer, as it clears up the issue. Apparently I was
following a wrong trail. I was supposing that the “outflow” had been removed
because it was not working right, instead of not being general enough.
Since my oil-water program was crashing as soon as I put in the outflow
condition, I was blaming it.
Lldb was not of much help, but gdb pinpoints that I have not correctly
initialized the saturation field.
Thanks again!
De: Dumux [mailto:dumux-boun...@listserv.uni-stuttgart.de] En nombre de Timo
Koch
Enviado el: jueves, 7 de febrero de 2019 11:28 a. m.
Para: dumux@listserv.uni-stuttgart.de
Asunto: Re: [DuMuX] replacing outflow BC condition in legacy 2.12 code
On 07.02.19 16:56, Edscott Wilson wrote:
Hi Edscott,
Hello all,
I understand the the boundary type specification"outflow" has been removed
from the current version of DuMux.
that is correct. It was removed because the implementation wasn't general
enough. There is, to our knowledge, no general implementation that works for
all physics/equations and has the same semantics in all cases.
I see that an outflow is now to be specified by constructiong the element
solution, evaluating the gradient and calculating the flux.
That's _one_ possibility of implementing an outflow boundary in case of the box
scheme.
In an example I see that the templates for elementSolution and evalGradients
are used.
I am quite sure that a similar approach can be used somehow in 2.12 if I knew
exactly where to start looking. Am I right? If so, where should I start
looking?
Your question is unclear to me. Yes, you can do exactly the same as in 3.0 (why
not?), except that you have to implement the evalGradients function yourself.
But you might end up with exactly the implementation of the "outflow BC". If
you are happy with outflow in 2.12, why would you implement it in a different
way in 2.12? Maybe you can reformulate your question?
Timo
best regards,
Edscott
I
--
Dr. Edscott Wilson Garcia
Reservoir Engineering
Mexican Petroleum Institute
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