[gotterstab]

Hello everyone, I need some Help

I want to build a channel with periodic Obsctcale.
I built an obstacle successfully following the method in the video

https://www.youtube.com/watch?v=VdZAkO0XbcY

And then I try to use For loop to build more obstacles. But I failed and there is an Error

/*--------------------------------*- C++ -*----------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Version: 7
\\/ M anipulation |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object topoSetDict;
}

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


//subsetMesh -overwrite c0 -patch south
actions
(
for (i=1;i<5;i++)
{
double minx;
minx = 0.02*i-0.02;
miny = 0.02*i-0.02;
minz = 0.02*i-0.01;
maxx = 0.02*i-0.01;
maxy = 0.02*i-0.01;
maxz = 0.02*i-0.01;
{
name c0;
type cellSet;
action new;
source boxToCell;
sourceInfo
{
box ($minx $minz $miny)($maxx $maxz $maxy);
}
}

{
name c0;
type cellSet;
action invert;
}
}

);

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




--> FOAM FATAL IO ERROR:
Illegal dictionary entry or environment variable name "minx"
Valid dictionary entries are 0()

file: /home/dyfluid/Gmsh/versuch3/system/topoSetDict

I don't know the reason. Is this method feasible?

Thanks a lot for your help

Happy foam