|August 20, 2009, 15:24||
Temporal discretisation in interFoam
Join Date: Aug 2009
Posts: 46Rep Power: 8
I am writing my Bachelor-Thesis at the moment and need an information about the way time is integrated by the interFoam solver for the basics-chapter of my thesis.
I already spent a lot of time for searching the User- and Programmer-Guides, but all I found are the several possibilities to perform the time integration. What I want to know is: Which of the possibilities is really used by the interFoam solver?
The three possibilities are listed in the Programmer-Guide:
-Euler explicit and
The only thing I found is the possibility to choose the time derivative in the fvSchemes dictionary, but I could not find a place to choose the way time integration is performed.
I think the answer is located within the PISO loop that is called by interFoam, but I searched every source I could think of and did not find the answer to my question.
|August 21, 2009, 04:43||
Niels Gjoel Jacobsen
Join Date: Mar 2009
Location: Deltares, Delft, The Netherlands
Posts: 1,619Rep Power: 25
For interFoam, the momentum equation is discretized in time using the schemes chosen in fvSchemes by either
With respect to the gamma-equation it is solved using explicit Euler if you use the standard interFoam. It can be recompiled to use input from fvSchemes, i.e. implicit time integration; threads can be found on the forum on this topic.
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