Dear Norihiro, thanks for the reply.
I think I didn't explain well my problem. I was talking about the
extraction points(wells) in a geothermal reservoir when the pressure
and flow rate at the extraction well(s) are unknown. I read the
publication by Blocher et al. (2015); it is stated that flow rates and
pressures were calculated in OGS. Based on this fact, I was wondering
how to define this open boundary conditions so I can calculate
production flow rates and pressures given injection rates and
injection pressures.
Thanks again!
On Tuesday, 19 July 2016 11:33:21 UTC+1, Norihiro Watanabe wrote:
Since OGS is based on FEM, free boundary conditions cannot be
handled. There are some numerical hacks to imitate it, but have not
been implemented in OGS so far. If you make a domain larger and keep
enough distance from the domain boundary, influence of boundary
conditions can be neglected.
BTW Neumann conditions are supported in ST files.
best,
nori
On 07/19/2016 08:45 AM, Jhonny Encalada wrote:
> Dear Users,
>
> I was wondering how to define free boundary conditions for
> LIQUID_FLOW. I don't want impose any pressure or flux at the
outlet of
> my model (reservoir). I was looking for smething like Neumann
conditions
> but OGS does not support this. Can anybody give me a clue? I will be
> glad really!
>
> Jhonny,
>
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Norihiro Watanabe, Dr.-Ing.
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