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-   -   No div(u) in fvSchemes for basic/potentialFoam/cylinder tutorial? (http://www.cfd-online.com/Forums/openfoam-solving/121891-no-div-u-fvschemes-basic-potentialfoam-cylinder-tutorial.html)

gcengineer August 7, 2013 06:44

No div(u) in fvSchemes for basic/potentialFoam/cylinder tutorial?
 
I'm trying to understand the fvSchemes dictionary.

According to the OpenFOAM Programmers Guide (p. P-42, http://foam.sourceforge.net/docs/Gui...mmersGuide.pdf), this tutorial solves a mass conservation equation (div(U) == 0) and a pressure equation (laplacian(1,p) == 0).

When I look at the fvSchemes dictionary for this problem, I see an entry for the pressure equation in laplacianSchemes, but I don't see an entry for the mass conservation equation in divSchemes.

Why is there no entry for div(U) in divSchemes?

Thanks.

gcengineer August 10, 2013 00:33

mastering fvSchemes in OpenFOAM
 
I am also trying to master fvSchemes and would appreciate any guidance on this question.

Thanks.

cfdonline2mohsen August 10, 2013 08:18

Dear gcengineer
Yeah you are right.
I remember that this tutorial has some problem and does not work.
Have a look at the following thesis about fvSchemes:

1996 Error analysis and estimation in the Finite Volume method with applications to fluid flows; Professor Hrvoje Jasak, PhD
Thesis

2006 The Potential of Large Eddy Simulation for the Modeling of Wall Bounded Flows Eugene de Villiers, PhD Thesis


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