turbulenceFields in controlDict not working (apparently)

pmarreiro · January 13, 2018, 17:53

Hello FOAMers,

I want to extract turbulence quantities using the solver pisoFoam, particularly the turbulence kinetic energy dissipation (epsilon).

To contextualize, i am performing the simulation of a planar jet using the LES model dynamicKEqn from OF5.

By reading the dynamicKEqn.H the epsilon is being returned:

Code:

177 //- Return sub-grid dissipation rate
178 virtual tmp<volScalarField> epsilon() const;

so i added the following function to my controlDict file:

Code:

	
functions
{ 
...
turbulenceFields1
	{
	        type                  turbulenceFields;
		libs                   ("libfieldFunctionObjects.so");
		field                  epsilon;
		writeControl	timeStep;
		writeInterval	1;
	}
}

But no output came. I mean, a file named "turbulenceProperties" is created but without content (literally a 0kb file).

Does anyone have the same problem or know how to solve it? Maybe it is a problem of my OF, i don't know but it is really strange as this quantity should be an easy one to output.

Moreover, i want also to extract the dynamic constants of the model (Ce and Ck) and tried without success...

pmarreiro · January 13, 2018, 18:29

I ran OF in another machine and the turbulenceFields command worked.

But the question of the Ce and Ck constants still remains!

pmarreiro · January 14, 2018, 08:13

I will create a new thread for the dynamic constants of the model.

January 13, 2018, 17:53	turbulenceFields in controlDict not working (apparently)	#1
pmarreiro New Member Pedro Marreiro Join Date: Nov 2017 Location: Lisbon Posts: 8 Rep Power: 8	Hello FOAMers, I want to extract turbulence quantities using the solver pisoFoam, particularly the turbulence kinetic energy dissipation (epsilon). To contextualize, i am performing the simulation of a planar jet using the LES model dynamicKEqn from OF5. By reading the dynamicKEqn.H the epsilon is being returned: Code: 177 //- Return sub-grid dissipation rate 178 virtual tmp<volScalarField> epsilon() const; so i added the following function to my controlDict file: Code: functions { ... turbulenceFields1 { type turbulenceFields; libs ("libfieldFunctionObjects.so"); field epsilon; writeControl timeStep; writeInterval 1; } } But no output came. I mean, a file named "turbulenceProperties" is created but without content (literally a 0kb file). Does anyone have the same problem or know how to solve it? Maybe it is a problem of my OF, i don't know but it is really strange as this quantity should be an easy one to output. Moreover, i want also to extract the dynamic constants of the model (Ce and Ck) and tried without success...

January 13, 2018, 18:29	Update	#2
pmarreiro New Member Pedro Marreiro Join Date: Nov 2017 Location: Lisbon Posts: 8 Rep Power: 8	I ran OF in another machine and the turbulenceFields command worked. But the question of the Ce and Ck constants still remains!

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January 14, 2018, 08:13		#3
pmarreiro New Member Pedro Marreiro Join Date: Nov 2017 Location: Lisbon Posts: 8 Rep Power: 8	I will create a new thread for the dynamic constants of the model.