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Forum: OpenFOAM Running, Solving & CFD

March 12, 2009, 02:16

Replies: 3

How to solve in simpleFoam with a volumesourceterm implicity

Views: 1,483

Posted By niklas

...interrupted...continuing:

...interrupted...continuing:

however if a and U is a vector you will have

a/U (vector/vector = ?)

further (a/U)*U should still be a vector so
(a/U) should either be a scalar or a...

Forum: OpenFOAM Running, Solving & CFD

March 11, 2009, 06:39

Replies: 3

How to solve in simpleFoam with a volumesourceterm implicity

Views: 1,483

Posted By niklas

problem: dU/dt = U + a exp

problem:
dU/dt = U + a

explicit: (U^n - U^(n-1)/dt = U^(n-1) + a
implicit: (U^n - U^(n-1)/dt = U^n + a

explicit/implicit has nothing to do with the evaluation of a here, only with how U...

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