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Forum: OpenFOAM Running, Solving & CFD

February 11, 2011, 06:25

Replies: 24

DDt

Views: 12,446

Posted By linch

I tried it out in OF 1.7.1: DDt(U,x) can't be...

I tried it out in OF 1.7.1:
DDt(U,x) can't be compiled, DDt(phi,x) can.

I still don't understand the meaning of DpDt = fvc:: DDt(surfaceScalarField("phiU", phi/fvc::interpolate(rho)), p);
Edit:...

Forum: OpenFOAM Running, Solving & CFD

February 10, 2011, 11:00

Replies: 24

DDt

Views: 12,446

Posted By linch

DDt(U,x) DDt(phi,x) DDt (phi//fvc::interpolate(rho),x)?

So what's the correct implementation, if I'm looking for Langangian derivative for a scalar X (DxDt):

fvc::DDt(phi,x) or fvc::DDt(U,x)?
And why in i.e. rhoPisoFoam there is an expression: DpDt =...

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