Hi Again,
I am trying to build 3D meshes manually. Unfortunately, I dont know how to create volume elements.
Is there any command for this?
Another question is (which would also solve my primal problem), in which format is it possible to import meshes in Netgen? I have tried to Export a simple mesh from netgen (in neutral format) and then imported it again. Unfortunately, this does not work. I have attached the code for the simple mesh.
It would be great if you could help me, with at least one of the problems.
Code for Volume mesh:
import ngsolve as ngs
from netgen.geom2d import unit_square, MakeCircle, SplineGeometry
from netgen.meshing import Element0D, Element1D, Element2D, MeshPoint, FaceDescriptor, Mesh
from netgen.csg import Pnt
mesh = Mesh(dim=3)
pnums = []
pnums.append(mesh.Add(MeshPoint(Pnt(0, 0, 0))))
pnums.append(mesh.Add(MeshPoint(Pnt(1, 0, 0))))
pnums.append(mesh.Add(MeshPoint(Pnt(0, 1, 0))))
pnums.append(mesh.Add(MeshPoint(Pnt(0, 0, 1))))
mesh.SetMaterial(1, "mat")
mesh.Add (FaceDescriptor(surfnr=1,domin=1,bc=1))
mesh.Add(Element2D(1, [pnums[0], pnums[1], pnums[2]]))
mesh.Add(Element2D(1, [pnums[0], pnums[1], pnums[3]]))
mesh.Add(Element2D(1, [pnums[0], pnums[2], pnums[3]]))
mesh.Add(Element2D(1, [pnums[1], pnums[2], pnums[3]]))
mesh=ngs.Mesh(mesh)Mesh Import:
8
0.000000 0.000000 0.000000
0.000000 0.000000 1.000000
1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
1.000000 0.000000 1.000000
0.000000 1.000000 1.000000
1.000000 1.000000 0.000000
1.000000 1.000000 1.000000
6
1 2 4 8 6
1 2 5 8 7
1 1 2 7 3
1 2 3 5 7
1 1 2 4 7
1 2 4 7 8
12
1 1 4 7
1 1 7 3
2 1 2 4
2 2 6 4
3 4 8 7
3 4 6 8
4 5 7 8
4 3 7 5
5 2 8 6
5 2 5 8
6 2 3 5
6 1 3 2