CFD Online Discussion Forums

CFD Online Discussion Forums (
-   OpenFOAM Pre-Processing (
-   -   Runing cavity on Discretizer (

RTom June 21, 2013 13:01

Runing cavity on Discretizer
Hello I'm trying to run the cavity case of OpenFOAM UserGuide in Discretizer, but looks like Discretizer cannot take the moving walls conditions like OpenFOAM.

The results are different.

If check the "p.text" file on directory "0" I will see that Discretizer always needs a p fixedValue in at least 1wall and does not admit a zeroGradient on all walls; when the OpenFOAM accept a p zeroGradient on all walls.

The case I'm trying to simulate on Discretizer is "cavity", according to the UserGuide.pdf that you can find it in opt/openfoam201/doc

Can this case be run in Discretizer?

nimasam June 22, 2013 08:53

solvers need to know the pressure of atleast one point ;),
reference point or refrence cell for pressure, can be assigned at fvSolution in piso or pimple sub dict

RTom June 22, 2013 23:00

Oh thanks! it works!
I established the pRefCell and pRefValue in fvSolution directly from the .text document (in the "system" directory)

But is there a way to make this change it directly from Driscretizer GUI? I know how to set the nCorrectors and nNonOrthogonalCorrectors of fvSolution.text with the GUI, but I don't find a way to set the pRefCell and pRefValue from the GUI

immortality June 25, 2013 01:11

hi Tom
Continuing from privates so discretizer is a GUI for OF that can also used for optimization purposes.can it be combined with dakota also in your opinion.
Thats nice to be updated and support more as dear Bruno said in another thread about Discretizer.
I mistake it by digitizer thats for figures.

All times are GMT -4. The time now is 10:54.