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-   -   How to use Forward Euler in OpenFOAM 3.0.1 (https://www.cfd-online.com/Forums/openfoam-solving/180790-how-use-forward-euler-openfoam-3-0-1-a.html)

mtgoncalves November 30, 2016 09:05

How to use Forward Euler in OpenFOAM 3.0.1
 
All the time schemes in OpenFOAM 3.0.1 are implicit:

http://cfd.direct/openfoam/user-guide/fvschemes/

The off-centering parameter for the CrankNicolson scheme cannot be set such that the scheme reduces to Forward Euler. Is there a quick way to use an explicit time scheme? I am, specifically, interested in Forward/Explicit Euler.

elones November 30, 2016 12:01

Yes, use fvc not fvm for space discretization. It will create diagonal matrix for linear solver which corresponds to explicit time discretization.


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