Dear sir,
I created a hemisphere geometry with hollow bottom using the following code. However, when I changed the meshing option into second order element, then I generate the mesh, and when i clicked on the refine uniform tab, the bottom is not hollow anymore. It have a strange pandan leaf shape. How can I fixed that?from ngsolve import *
from netgen.csg import *
from netgen.meshing import MeshingStep
from ngsolve.webgui import Draw
geo = CSGeometry()
sphere = Sphere(Pnt(0,0,0), 3)
bot = Plane(Pnt(0,0,0), Vec(0,0,-1))
finitesphere = sphere * bot
geo.AddSurface(sphere, finitesphere.bc(“surface”))
geo.NameEdge(sphere,bot, “bottom”)
mesh = Mesh(geo.GenerateMesh(maxh=0.3))
mesh.Curve(2)
Draw(mesh)
Thanks a million.
regards,
Suza