Hi Jan,
Try vmtksurfaceremeshing instead of vmtksurfacetriangle before generating
the volumetric mesh. The large aspect ratio of the triangles is likely what
throws off vmtkmeshgenerator.
Arjan
On Wed, Feb 27, 2013 at 9:31 AM, Jan Helmig <jan_hel...@hotmail.com> wrote:
> Hi,
>
> I am trying to create a cylinder mesh with boundary layer cells. The
> created mesh looks fine except the fact that there is no boundary layer
> created. As a starting point I use an open, non-capped cylinder surface
> created with DOLFIN (attached to the mail). Then I use the following
> commands.
>
> vmtk = []
>
> outfile = "cylinder.xml"
> outfiles.append(outfile)
>
> vmtk.append("**vmtksurfacetransform -ifile cylinder.vtp -rotation 0.0
> 0.0 90.0 -translation 0.0 %f 0.0" %float(height/2))
> #vmtk.append("**vmtksurfaceviewer")
> vmtk.append("**vmtksurfacetriangle")
>
> # Mesh generator (comment out unwanted lines)
> cmd = "vmtkmeshgenerator"
> cmd += " -edgelength %f" %0.11
> cmd += " -maxedgelength %f" %(1.2*0.12)
> cmd += " -minedgelength %f" %(0.8*0.12)
> cmd += " -boundarylayer 1"
> cmd += " -thicknessfactor 0.1"
> cmd += " -tetrahedralize 1"
>
> vmtk.append(cmd)
>
> vmtk.append("vmtkmeshwriter -entityidsarray CellEntityIds")
>
> vmtk = " --pipe ".join(vmtk)
> vmtk = vmtk+" -ofile %s" %outfile
> print vmtk
> subprocess.call(vmtk, shell=True)
>
>
> Does anybody understand why there is no boundary layer created?
> Maybe it has something to do that the surface consists out of very
> stretched triangles after the command "vmtksurfacetriangle".
>
> Thanks a lot in advance,
> Jan
>
>
>
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