[fsan]

Hello,
I am currently a student and new to openFoam and as part of my intership I have to make some simulation with this software.
I am now trying to mesh a cylinder so thereafter I can simulate some reacting flow inside.
My problem right now is that my layers are collapsed on the surface of my cylinder. In both my inlet and outlet my layers are not surrounding the surface as you can see on the image attached.
(one image is the inlet face the other is a the view when I cut the inlet in its half)

I post my code here :

// Which of the steps to run
castellatedMesh true;   // make basic mesh ?
snap            true;    // decide to snap back to surface ?
addLayers       true;   // decide to add viscous layers ?


geometry // Load in STL files here
{
    cylindre
    {
        type triSurfaceMesh;
        file "cylindremm.stl";
    
    	regions
    	{
		patch0 {name inlet;}
		patch1 {name tube;}
		patch2 {name outlet;}		
    	}
     }

	refinementCylinder {
			    type searchableCylinder; 
			    point1 (0 0 0); 
			    point2 (0 2 0);
			    radius 0.1;
		      	   }
};

castellatedMeshControls
{
    maxLocalCells 3000000;  //max cells per CPU core //1000000
    maxGlobalCells 10000000; //max cells to use before mesh deletion step //2000000
    minRefinementCells 0;  // zero means no bad cells are allowed during refinement stages
    maxLoadUnbalance 0.10;
    nCellsBetweenLevels 5;  // expansion factor between each high & low refinement zone

    // Explicit feature edge refinement
    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    features // taken from STL from each .eMesh file created by "SurfaceFeatureExtract" command
    (
        {file "cylindremm.eMesh"; level 0;} 
    );

    // Surface based refinement
    // ~~~~~~~~~~~~~~~~~~~~~~~~

    refinementSurfaces // Surface-wise min and max refinement level
    {
	cylindre
        {
            // Global surface-wise min and max refinement level
            level (0 0);

            // Local surface-wise min and max refinement level
	    // You will need to use the name given in the STL file
            regions
	    {
            	patch0							//inlet 
                { level (2 2); patchInfo { type patch; } }

           	patch1							//tube 
                { level (2 2); patchInfo { type wall; } }

            	patch2							//outlet 
                { level (2 2); patchInfo { type patch; } }

            	}
         }
    }  


    resolveFeatureAngle 15;  // Resolve sharp angles // Default 30
    
    refinementRegions        // In descending levels of fine-ness
    {
	cylindre
 	{
		mode inside;
		levels ((1e-4 2)); 
	}

    } 


    locationInMesh (0 1 0) ;  //to decide which side of mesh to keep **
    allowFreeStandingZoneFaces false;
}


// Settings for the snapping.
snapControls
{
    nSmoothPatch 5; 
    tolerance 7;
    nSolveIter 150;
    nRelaxIter 20; 
    nFeatureSnapIter 20; 
    
// New settings from openfoam 2.2 onwards for SHMesh

implicitFeatureSnap false; // default is false - detects without doing surfaceFeatureExtract
explicitFeatureSnap true; // default is true
multiRegionFeatureSnap false; // deafault is false - detects features between multiple surfaces

}



// Settings for the layer addition.
addLayersControls
{
    relativeSizes 		true;
	expansionRatio 		1.2;
	finalLayerThickness 	0.6;
	minThickness 		0.02;
	//firstLayerThickness	0.01
    layers
    {
        tube { nSurfaceLayers 5; }	
    }


    // Advanced settings
    featureAngle 				130;	
    slipFeatureAngle 				30;

    nGrow 					0;

    nLayerIter 					50;
    nRelaxedIter 				20;
    nRelaxIter 					5;

    nSmoothSurfaceNormals 			1;
    nSmoothNormals 				3;
    nSmoothThickness 				10;
    maxFaceThicknessRatio 			0.5;
    maxThicknessToMedialRatio 			0.3;

    minMedialAxisAngle 				90;
    minMedianAxisAngle 				90;
    nMedialAxisIter           			10;

    nBufferCellsNoExtrude 			0;
    additionalReporting 			false;
}




// Generic mesh quality settings. At any undoable phase these determine
// where to undo.
meshQualityControls
{
    maxNonOrtho 70;
    maxBoundarySkewness 4;
    maxInternalSkewness 4;
    maxConcave 80;
    minFlatness 0.5;
    minVol 1e-13;
    minTetQuality 1e-9;
    minArea -1;
    minTwist 0.02;
    minDeterminant 0.001;
    minFaceWeight 0.02;
    minVolRatio 0.01;
    minTriangleTwist -1;

    // Advanced

    nSmoothScale 4;
    errorReduction 0.75;

    relaxed
    {
	maxNonOrtho 75;
	//maxBoundarySkewness 25;
	//maxInternalSkewness 8;
    }

}

// Advanced

debug 0;

//// Write flags
writeFlags
(
    scalarLevels    // write volScalarField with cellLevel for postprocessing
    layerSets       // write cellSets, faceSets of faces in layer
    layerFields     // write volScalarField for layer coverage
);

// Merge tolerance. Is fraction of overall bounding box of initial mesh.
// Note: the write tolerance needs to be higher than this.
mergeTolerance 1E-6;


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

I really don’t know wich part of addLayer is not well defined, I tried to see how it was done in different tutorial and tried to adapt it to my case but I didn’t succeed to solve this issue.
If anyone can see what’s wrong with my case and that could help me with this issue that would be nice, thank you .