Dear Gmsh community,

I'm fighting with Gmsh to set up a model of a quarter cylinder using the new OpenCascade based facilities. The following script is considered:

SetFactory("OpenCASCADE");

cylinder = newv;
Cylinder(cylinder)         = {  0.0  ,  0.0  ,  0.0  , 0.0  ,  0.0  ,  60.0,  175.0  };
box = newv;
Box(box)                 = {  0.0  ,  0.0  , -50.0 ,200.0  , 200.0  ,200.0  };
lst() = BooleanIntersection { Volume{ cylinder }; Delete; }
                            { Volume{ box }; Delete; };
pt_volume = lst[0];

Characteristic Length{ PointsOf{ Volume{:}; } } = 6.0;

However, the surface mesh on the (remaining part of the) cylinder is rather odd, it contains one single layer of elements axially. (Please find attached the image).

How could I get a proper, isotropic mesh?

Thank you for your help in advance,

Jozsef


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