Hello, I am struggling with Gmsh, then I found I have coreform, thanks in advance if someone can help me.
I have a 5x5x5 box, and in the middle (2.5,2.5,2.5) of the box, I want to have an ellipsoid that has a = 0.03, b=0.03, and c=0.1. like in the picture
and the mesh is finer near the ellipsoid, and coarser gradually to the boundary. Also, I need to give a physical volume to the box (cavity inside) and a physical surface to the cavity, because later I need to choose them in third-party software to apply boundary conditions.
//this is my gmsh code
SetFactory("OpenCASCADE");
eps = 1e-5;
Block(1) = {0, 0, 0, 5, 5, 5};
Sphere(2) = {2.5, 2.5, 2.5, 1};
Dilate {{2.5, 2.5, 2.5}, {0.03, 0.03, 0.1}} { Volume{2}; }//this one used to scale the radius to a,b,and c
BooleanDifference(3) = { Volume{1}; Delete; }{ Volume{2}; Delete; }; //Box mins the ellipsoid
inner() = Surface In BoundingBox{2.5-0.03-eps,2.5-0.03-eps,2.5-0.1-eps, 2.5+0.03+eps, 2.5+0.03+eps, 2.5+0.1+eps};//This one is to define the surface I want
Physical Volume("my volume") = {2};
Physical Surface("my inner surface") = inner();
Mesh.MeshSizeFromCurvature = 30;
Mesh.MeshSizeMax = 0.2;
Gmsh works fine except cannot give me the physical surface of the cavity.
