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Forum: OpenFOAM Programming & Development

January 7, 2011, 07:28

Replies: 33

phi -= pEqn.flux() vs. linearInterpolate(U) & mesh.Sf()

Views: 26,534

Posted By stevenvanharen

I don't see this, what is actually saved is: ...

I don't see this, what is actually saved is:

phi = (fvc::interpolate(U) & mesh.Sf())
+ fvc::ddtPhiCorr(rUA, U, phi)-pEqn.flux();So I think still a combination of method a and b....

Forum: OpenFOAM Programming & Development

January 6, 2011, 15:08

Replies: 33

phi -= pEqn.flux() vs. linearInterpolate(U) & mesh.Sf()

Views: 26,534

Posted By stevenvanharen

Hi Santiago, Ok, at start method b is used...

Hi Santiago,

Ok, at start method b is used in createFields.H indeed. This is just to get the simulation started. The non-linearity of the momentum equation is lagged using phi from the previous...

Forum: OpenFOAM Programming & Development

January 6, 2011, 11:18

Replies: 33

phi -= pEqn.flux() vs. linearInterpolate(U) & mesh.Sf()

Views: 26,534

Posted By stevenvanharen

Hi Santiago, Ok, but why do you think method...

Hi Santiago,

Ok, but why do you think method a) is used in continued running and method b) in restart?

If I look in icoFoam I don't see any differences for restarting or not.

at line 72:
...

Forum: OpenFOAM Programming & Development

January 6, 2011, 05:08

Replies: 33

phi -= pEqn.flux() vs. linearInterpolate(U) & mesh.Sf()

Views: 26,534

Posted By stevenvanharen

Hi Santiago, please keep in mind that -=...

Hi Santiago,

please keep in mind that -= means subtraction.

So, in step a phi is not completely recalculated, but subtracted with pEqn.flux();

For a complete understanding of the procedure...

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