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Peclet number does not appear in ParaView

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Old   July 9, 2010, 03:52
Default Peclet number does not appear in ParaView
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Claus Meister
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Hello Foamers!

I ran an icoFoam case and afterwards the Pe tool. I wanted to visualize Pe in ParaView I notice that I have no access to fields. I would like to see them, what do I do?

Cheers in advance
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Old   July 9, 2010, 06:09
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hi claus,

i think you can only see Pe as Vector arrows. To do this you have to type

foamToVTK -surfaceFields

then start paraview and open VTK/surcfaceFields, then "Apply" and Filters/Common/Glyph or simply click the "Glyph" button, after this you can see the vectors of Pe...


i hope this helps

Last edited by marcbest; July 9, 2010 at 06:52.
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Old   July 9, 2010, 07:27
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Claus Meister
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Hello marcbest,

thanks for you advice which had worked, but this way is unsatisfactory, because such an effort must be made. I keep looking for an better solution; probaly the code has to be rewritten.

Cheers
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Old   July 9, 2010, 12:51
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Nima Samkhaniani
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Hi
why don't you try to add peclet number in creatFields.H? as a variable which it shouldn't be read but it should be write ????
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Old   July 10, 2010, 04:17
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Claus Meister
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Hi,

what you mean by that? Do you mean to cope the problem by using volScalarField? Currently, I am trying either, but the problem is: I do not know how to compute the measure of the cells, i.e.

Let U, nu and nut be given then

volScalarField Pe
(
IOobject
(
"Pe",
runTime.timeName(),
mesh,
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
mag(U)/(nu+nut)*"What"
)

What can I insert for "What"?

Cheers
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Old   July 10, 2010, 04:20
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Claus Meister
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Additionally, I should mention that I am only interesting in Navier-Stokes convection-dominated flows.
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Old   July 10, 2010, 07:17
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Nima Samkhaniani
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hi friend
one way can be to enter characteristic length, through Dic by "readScalar" function
then put this length instead of "what" but im not sure!!!
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Old   September 15, 2010, 11:56
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Quote:
I keep looking for an better solution; probaly the code has to be rewritten.
You may have a look at the Co utility, it outputs a volScalarField from a surfaceScarlarField. This could be adapted to the Pe utility
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