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OpenFoam, snappyHexMesh and Salome for patches "top, bottom wall'

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Old   May 6, 2021, 15:26
Default OpenFoam, snappyHexMesh and Salome for patches "top, bottom wall'
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Alberto Campuzano
Join Date: Mar 2021
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Hello dear all.


i am currently using openFoam and SnappyHexMesh. However nowadays i need to get involved with Salome in order to create my geometry.


i am practicing with the most simple geometry, a Box with an sphere inside of the Box.


Look after creating my stl files "top, bottom, wall" and riceHusk for the "sphere" and sending them into snappyHexMesh everything goes fine until i apply the solver (solids4Foam). My residuals are not converging at all, instead they are increasing.


So according to that i took the geometry from Tobias Holzmann from his webstie


HTML Code:
https://holzmann-cfd.com/community/training-cases/sphere-meshing

so i use his geometry created in salome and my results converged. it means that the solvers is not an issue


the issue comes from snappy or salome, let me mention that also i copied the snappyHexMesh from tobias from the link above and added faceZone, cellZone and cellZoneInside because i need to specify that some part of my geometry contains other parameters. And again using the geometry created by tobias (the same as mine) the system runs smooth and converge quite well



Code:
    refinementSurfaces
    {
        polyester.stl
        {
            // Surface-wise min and max refinement level
            level (0 0);
            regions 
            {
                bottom       { level (1 1); patchInfo { type patch; }}
                top      { level (1 1); patchInfo { type patch; }}
                wall        { level (1 1); patchInfo { type patch; }}
            }
        }
        riceHusk
        {
            // Surface-wise min and max refinement level
            level (2 2);
            faceZone    faceZoneRiceHusk;
            cellZone    riceHusk;
            cellZoneInside inside;

//            boundary    internal;
        }



With that being said i dont know why when i create my geometry (the same as tobias) the system does not converge?


the problems comes from snappyHexMesh or salome


any suggestions?


again, i am quite new to Salome. i dont know if this post must be in Salome.



in attached file you will find my geometry also the snappyHexMesh. i can not attach the geometry by tobias because of the file size. but the geometry can be found in the link mentioned above



thanks in advance
Alberto


geometryAndSnappy.zip
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