[cmoreno98]

Hello,

I'm new to OpenFOAM and I'm trying to run a microfluidics simulation. I have an issue inside controlDict file.
startTime is 0 s, endTime is 0.2 s and I want to write a folder every 0.0016 s (a total of 125 folders). That is, writeInterval = 0.0016.

The problem is that OF writes data every time step (deltaT = 0.000005 s), no matter what the value of writeInterval is.

The controlDict file is the following:

/*--------------------------------*- C++ -*----------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Version:  6
     \\/     M anipulation  |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    location    "system";
    object      controlDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

application     interFoam;

startFrom       startTime;

startTime       0;

stopAt          endTime;

endTime         0.2;

deltaT          0.000005;

writeControl    clockTime;

writeInterval   0.0016;

purgeWrite      0;

writeFormat     ascii;

writePrecision  6;

writeCompression off;

timeFormat      general;

timePrecision   6;

runTimeModifiable yes;

adjustTimeStep  no;

maxCo           2;
maxAlphaCo      1;

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

What is the problem? Thank you in advance,

Carlos.

[akashpatel95]

Originally Posted by cmoreno98

writeControl    clockTime;

writeInterval   0.0016;

Try this,

writeControl    adjustableRunTime;
writeInterval   0.0016;

[cmoreno98]

Originally Posted by akashpatel95

Try this,

writeControl    adjustableRunTime;
writeInterval   0.0016;

It works! You're great, thank you very much

Greetings from Spain

[Yann]

In addition, for the readers who might bump into this thread, I suggest reading the user guide here : https://cfd.direct/openfoam/user-guide/v6-controldict/

4.3.2    Data writing

  writeControl Controls the timing of write output to file. 
timeStep: Writes data every writeInterval time steps.
runTime: Writes data every writeInterval seconds of simulated time.
adjustableRunTime: Writes data every writeInterval seconds of simulated time, adjusting the time steps to coincide with the writeInterval if necessary — used in cases with automatic time step adjustment.
cpuTime: Writes data every writeInterval seconds of CPU time.
clockTime: Writes data out every writeInterval seconds of real time.
  writeInterval Scalar used in conjunction with writeControl described above.

Cheers,
Yann