[Geoqus] ABAQUS Material Balance-Porous Media

[Manooch Salehabadi]

Dear Kasper:

Many thanks for your e-mail.
Yes, you are right, one way of applying a source term is considering source term as a constant pressure but what I want to consider is a source term as a source of constant fluid flux then ABAQUS can calculate desired pore pressure distribution.
I know that ABAQUS provides some capabilites like *CFLOW OR *DFLOW. But it is still not clear to me if ABAQUS consider the seepage velocity which user provides it through *CFLOW OR *DFLOW keywords as a flux load or not? Let me put it in this way, is seepage velocity defined through *DFLOW keywords added to the load matrix of finite element form per element? I mean this matrix: HPw=Qw H=permeability matrix , Pw=water pressure, Qw=water flux

Cheers
Manooch 
  

-----Original Message-----
From: geoqus-bounces+manooch.salehabadi=pet.hw.ac.uk at lists.ruhr-uni-bochum.de [mailto:geoqus-bounces+manooch.salehabadi=pet.hw.ac.uk at lists.ruhr-uni-bochum.de] On Behalf Of Kasper Fischer
Sent: 30 May 2008 11:19
To: Geoscientific Abaqus User Group
Subject: Re: [Geoqus] ABAQUS Material Balance-Porous Media

Dear Manooch Salehabadi,

if I remember right you just define boundary conditions for the pore pressure at places where you want to have sources or sinks of your fluid. Is this the answer to your question or did I misunderstand it?

Best regards

Kasper

+----------------------------------------------------------------------+
| Dr. Kasper D. Fischer            <kasper.fischer at ruhr-uni-bochum.de> |
| Ruhr-Universität Bochum                                              |
| Institut für Geologie, Mineralogie und Geophysik                     |
| NA 3 / 174                       Tel: +49 234 3227574                |
| D-44780 Bochum                   Fax: +49 234 3214181                |
| Germany                          www.geophysik.ruhr-uni-bochum.de    |
+----------------------------------------------------------------------+



Manooch Salehabadi schrieb:
> Dear All:
>
> Hi,
> i looked at the material balance of ABAQUS for wetting fluid in porous 
> media but i could not find any source term in it.
> Normally a material balance is like :
>  accumulation term= net flux around element surface+ source term but 
> in ABAQUS i could not find source term it is like :
> intergal of accumulation over element volume= integral of net flux 
> over element surface My question is if i want to consider source term 
> in my modelling what
> should i do?   
> I will be much appreciated if you could advice me please
>
> With Best Regards
> Manooch
>
>
>   
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