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Reading a volScalarField from File

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Old   June 28, 2005, 11:49
Default Is it possible to read in a vo
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Klaus Schnitzlein
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Is it possible to read in a volScalarfield from a
data file (in the constant directory) during the run and if yes, how can this be achieved?

Thanks in advance.
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Old   June 28, 2005, 11:55
Default Yes, instead of say vol
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Yes, instead of say

volScalarField p
(
IOobject
(
"p",
runTime.timeName(),
mesh,
IOobject::MUST_READ,
IOobject::AUTO_WRITE
),
mesh
);

use

volScalarField p
(
IOobject
(
"p",
"constant",
mesh,
IOobject::MUST_READ,
IOobject::NO_WRITE
),
mesh
);
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Old   June 29, 2005, 04:56
Default Thank you very much for your h
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Klaus Schnitzlein
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Thank you very much for your help. Originally I replaced runTime.timeName() by runTime.constant(). The results are identical.

I set up the file defining the field beginning with:

dimensions [...];

internalField
nonuniform (
.. here the values are inserted
)

What I know is that I have to insert the values for the interior cells. But, in what order? And how do they relate to the cells and their indices, respectively.

I would like to specify the values in the same ordering as for the cells (polyMesh/cells). Is it possible? Is there a chance to define the values for the entire mesh, not only for the internal and boundary fields, e.g. by using a different keyword, e.g. Field ...?
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Old   June 29, 2005, 05:01
Default Come on, this is trivial: the
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Hrvoje Jasak
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Come on, this is trivial: the list of values is in the same order as the list of cells: first value into first cell, second value into a second cell etc. Anything else would be madness.

Hrv

P.S. For future reference, think about your problems: if it is logical, it is probably right!
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Old   June 29, 2005, 05:03
Default BTW, before you ask, the same
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BTW, before you ask, the same applies for points, edges, faces, faces in patch etc.

Hrv
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Old   November 23, 2022, 12:40
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Raphael Santos
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Hello,

I've asked about how to create and use a new volScalarField on a drag model.

But now, I solved. I did it creating the variable on createFields.H, and later, calling it on the drag model file using lookup, command.

Last edited by Raphael_Santos; November 27, 2022 at 19:53. Reason: solved
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