Improper element size on cylidrical surfaces
A model of a quarter cylinder based on the OpenCascade facilities 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;
The resulting surface mesh on the (remaining part of the) cylinder is rather odd, it contains one single layer of elements axially.