[fanta]

Hi, here is my controlDict. I noticed that my age functionObject is written in every single timestep in the processordirectories. That's not needed. How do i write the age functionObject only in the last timestep?

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  v2206                                 |
|   \\  /    A nd           | Website:  www.openfoam.com                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    location    "system";
    object      controlDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#include "../masterfile"

application     MYsimpleFoam;

startFrom       startTime;

startTime       0;

stopAt          endTime;

endTime         4000;

deltaT         	1;

writeControl    timeStep;

writeInterval   200;

purgeWrite      0;

writeFormat     binary;

writePrecision  6;

writeCompression off;

timeFormat      general;

timePrecision   6;

runTimeModifiable true;

functions {
	age
	{
        type            scalarTransport;
	    libs            (solverFunctionObjects);
	

	    // Optional entries

		// Name of scalar field to transport, default = 's'
		field           age;

		// Name of flux field, default = 'phi'
		phi             phi;

		// Name of density field for compressible cases, default = 'rho'
		rho             rho;
	
		// Name of phase field to constrain scalar to, default = 'none'
		phase           none;

		// Set the scalar to zero on start/re-start
		resetOnStartUp  no;

		// Name of field to use when looking up schemes from fvSchemes
		// default = <field>
		schemesField    U;

		// Diffusivity
	
		// Fixed value diffusivity
		D               #eval{ $k_/$dichte_/$cp_ };
	
		// Name of field to use as diffusivity, default = 'none'
		nut             none;

    	// Run-time selectable sources
    	fvOptions
    	{
		IncrementTime
			{
				type            scalarSemiImplicitSource;
				active          true;
				scalarSemiImplicitSourceCoeffs
				{
					selectionMode all;
					volumeMode  specific;
					injectionRateSuSp
					{
						age       (1 0);
					}
				}
			}
    	}
	}
}

libs
(
  "libMYLIB.so"
);

// ************************************************************************* //

[Yann]

Hi Fanta,

You can use writeControl and writeInterval parameters inside your function object in order to manage when the data is written.

https://www.openfoam.com/documentati...n-objects.html

Regards,
Yann