Automatically write Mach number field during runtime

daharn · November 5, 2015, 12:14

Hey,

I am using sonicFoam on OF 2.1 and when I would like to calculate the Mach number in my domain I simply run

Code:

Mach

.

However, this is tedious and also problematic when I examine a running case via paraview, because I would have to run

Code:

Mach -latestTime

whenever a new time folder is written.

Is it possible to tell OF to calculate the Mach field at every write interval during runtime?
I have already tried to add a

Code:

systemCall
writeCalls 1( "Mach -latestTime");

to

Code:

controlDict

.
This should work for composed cases but won't work very well when running in parallel, since I would have to hardcode the root directories for each instance.

Am I missing something? Is there a better way?

hemanthgrylls · August 17, 2019, 21:55

I am also looking for the same

please kindly let me know if you know the solution

MikeC · August 23, 2019, 01:43

Functional objects can be added to the controlDict, such as:

Code:

functions
{

    MachNumber
    {
        type                       MachNo;
        libs                        ("libfieldFunctionObjects.so");
        executeControl     timeStep;
        writeControl          writeTime;
    }

}

Carlo_P · August 23, 2019, 04:11

Hey All,
if you need the MachNumber only for last iteration, (or for old simulations) you can also create a new controldict file (such as postDict), with all the standard entry and the functionObjects and run "application -postProcessing"

Cheers,
Carlo

November 5, 2015, 12:14	Automatically write Mach number field during runtime	#1
daharn New Member Join Date: Nov 2015 Posts: 1 Rep Power: 0	Hey, I am using sonicFoam on OF 2.1 and when I would like to calculate the Mach number in my domain I simply run Code: Mach . However, this is tedious and also problematic when I examine a running case via paraview, because I would have to run Code: Mach -latestTime whenever a new time folder is written. Is it possible to tell OF to calculate the Mach field at every write interval during runtime? I have already tried to add a Code: systemCall writeCalls 1( "Mach -latestTime"); to Code: controlDict . This should work for composed cases but won't work very well when running in parallel, since I would have to hardcode the root directories for each instance. Am I missing something? Is there a better way?

August 23, 2019, 01:43		#3
MikeC New Member Mike Join Date: Dec 2016 Posts: 14 Rep Power: 9	Functional objects can be added to the controlDict, such as: Code: functions { MachNumber { type MachNo; libs ("libfieldFunctionObjects.so"); executeControl timeStep; writeControl writeTime; } } TommyGun likes this.

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August 17, 2019, 21:55		#2
hemanthgrylls New Member Dumbledore Join Date: Jun 2019 Posts: 10 Rep Power: 7	I am also looking for the same please kindly let me know if you know the solution

August 23, 2019, 04:11		#4
Carlo_P Senior Member Carlo_P Join Date: May 2019 Location: Italy Posts: 176 Rep Power: 8	Hey All, if you need the MachNumber only for last iteration, (or for old simulations) you can also create a new controldict file (such as postDict), with all the standard entry and the functionObjects and run "application -postProcessing" Cheers, Carlo