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writeObjects, internal energy

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Old   February 22, 2022, 13:33
Default writeObjects, internal energy
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cbarring
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Hi All. I am trying to write the internal energy that is calculated in a compressible flow calculation (compressibleInterFoam). Previously, I have written density data using code in controlDict. See this code below.

I want to extract internal energy. Inside the code below, have tried using "e", "thermo:e", etc. Nothing works. Does anybody have any suggestions?

Regards

---- Successful code for extracting density data, placed at bottom of controlDict ----

functions
{
writeObjects1
{
type writeObjects;
libs ( "libutilityFunctionObjects.so" );
objects
(
// list of fields/variables to be written
thermo:rho
);
writeControl writeTime;
writeInterval 1;
}
}
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Old   February 26, 2022, 20:55
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Maybe I am missing something, but the solver does not solve an energy equation but the temperature equation instead.


However, if the internal energy is indeed calculated by the solver, it would be registered in the object database. To see all the fields available in the database, add a "dummy" variable to the function object. Run the case and check your simulation log at the time step where the function object writes out the fields. You should see an error that "dummy" could not be found and get a list of all the registered objects (and thus the ones available to you).
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Old   February 27, 2022, 18:53
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Hi dkaddar: Thanks very much for your reply. This is most useful.
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