[Hennet_m]

Hi everybody,

I am a pretty new user of OpenFoam and I will use this software to optimize the rotor of helicopters.

Well, I try to simulate a 3D rotating flow around a NACA0012 extruded on 16 meters.

In a first step, I have used Openscad for the 3D blade rotor and I have saved it in STL format. This file is in
constant/triSurface.

In blockMeshDict, I have created a big boxe and my 3D blade is in the center of the box.
The command blockMesh gives me the first mesh.

The commande surfaceFeatureExtract -includedAngle 150 constant/triSurface/rotor.Stl features extracted correctly
all points of the rotor.

In the snappyHexmeshDict, I have created severals zones in the geometry:

geometry
{
rotor.stl
{
type triSurfaceMesh;
name rotor;
}

refinementBox
{
type searchableBox;
min (-3.0 -1.0 -2.0);
max (3.0 1.0 20);
}

cylinder_search
{
type searchableCylinder;
point1 (0.5 -1 0);
point2 (0.5 1 0);
radius 20;
name cylinder_search;
}


};

In the refinementSurfaces, I have set:

refinementSurfaces
{
rotor
{
// Surface-wise min and max refinement level
level (4 5);

}

cylinder_search
{
level (2 2);
cellZone MRF;
faceZone MRF;
// cellZoneInside inside;
zoneInside true;
}

}

In refinementregion:

refinementRegions
{
refinementBox
{
mode inside;
levels ((1E15 2));
}
// cylinder_search
// {
// mode inside;
// levels((1E15 2));
// }

}

After I have done the command: snappyHexmesh -overwrite, the results seems to be ok.

I have big problems for the boundary conditions. When I execute the command simpleFoam to simulate the flow,
simpleFoam says me that the keybord "outlet" is undefined in the dictionnary. This is strange because this
boundarycondition is already defined...

Could somebody can help me to solve this problem? It will be very useful for me. You can find the entire case in
the attached file.

Thanks you very much,

Best regards,

Martin.

Ps: my english is not very fluent, I am French.