How to use Forward Euler in OpenFOAM 3.0.1

mtgoncalves · November 30, 2016, 09:05

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.

November 30, 2016, 09:05	How to use Forward Euler in OpenFOAM 3.0.1	#1
mtgoncalves New Member Join Date: Aug 2016 Posts: 19 Rep Power: 10	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.

November 30, 2016, 12:01		#2
elones New Member Join Date: Mar 2014 Location: Czech Republic Posts: 29 Rep Power: 14	Yes, use fvc not fvm for space discretization. It will create diagonal matrix for linear solver which corresponds to explicit time discretization. mtgoncalves likes this.

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