[Albertine]

Good morning,
Im'm trying to create a 2D mesh using snappyHexMesh, of course I need to start from a 3D mesh and then I would like to make a 2D extrusion in order to have just one cell in the z direction. I would like to use the extruddeMesh command with the following dict. The command runs without errors however non modifications appear. Can you help me?

Thanks in advance

/*--------------------------------*- C++ -*----------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Version: 12
\\/ M anipulation |
\*---------------------------------------------------------------------------*/
FoamFile
{
format ascii;
class dictionary;
object extrudeDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //


constructFrom mesh; // Estrudere dalla mesh esistente
sourceCase "./"; // Percorso del tuo caso
sourcePatches (front); // Nome del patch che vuoi estrudere
exposedPatchName upperWall; // Nome del patch esposto
flipNormals false; // Non invertire le normali

// Estrusione a normale
extrudeModel linearNormal;

// Definisci il coefficiente di estrusione
linearNormalCoeffs
{
thickness 0.001; // Spessore a 0 per avere una sola cella
}

// Specifica il numero di strati, che sarà 1 poiché vogliamo una sola cella
nLayers 1; // Solo uno strato
expansionRatio 1.0; // Nessuna espansione

mergeFaces false; // Non unire le facce
mergeTol 0; // Tolleranza per la fusione degli spigoli


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

[Yann]

Hello Albertine,

I would expect something like constructFrom patch; rather than mesh.

Since you are using OpenFOAM-12, you can use this command:

foamInfo extrudeMesh

This will give you some information about the utility, and will point to tutorials using it. You can have a look at the tutorials to find one doing what you want to achieve and see how the extrudeMeshDict file is defined.

Regards,
Yann