[Zen]

Hi all,

Below is a snipped of a.stl file which is the result of an optimization with SU2. I can open it in tecplot and it looks fine but when I try to import it into pointwise with File->Import->Database I get the error as shown in error.png.

Do you have any idea why?

Thanks in advance,

solid surface_mesh
  facet normal 0 1 4.44102e-16 
    outer loop
      vertex 0.75 -3.9746e-16 0.895 
      vertex 0.75 -3.81916e-16 0.86 
      vertex 0.745159 -3.81916e-16 0.859997 
      vertex 0.745 -3.9746e-16 0.895 
    endloop
  endfacet
  facet normal -1.17082e-19 1 4.44086e-16 
    outer loop
      vertex 0.75 -3.81916e-16 0.86 
      vertex 0.75 -3.64972e-16 0.821845 
      vertex 0.74533 -3.64972e-16 0.821843 
      vertex 0.745159 -3.81916e-16 0.859997 
    endloop
  endfacet
  facet normal -7.96476e-20 1 4.44095e-16 
    outer loop
      vertex 0.75 -3.64972e-16 0.821845 
      vertex 0.75 -3.4671e-16 0.780724 
      vertex 0.745517 -3.46714e-16 0.780729 
      vertex 0.74533 -3.64972e-16 0.821843 
    endloop
  endfacet
  facet normal -2.10285e-19 1 4.44087e-16 
[etc etc ...]
  endfacet
  facet normal -0.989661 0 0.143429 
    outer loop
      vertex 9.79667e-06 0.798573 6.7597e-05 
      vertex -1.57253e-16 0.798574 1.42499e-16 
      vertex -1.57253e-16 0.717292 1.42499e-16 
      vertex 9.79667e-06 0.717291 6.7597e-05 
    endloop
  endfacet
endsolid

tecplot.jpg

error.png

[dgarlisch]

There are several reasons this could happen. A flaw in the file format. Non-manifold topology. Collapsed triangles. We will need more information to be sure.

Can you attach or otherwise provide the full STL file?

Please zip it first to reduce the file size.

[Zen]

Hi David,

Thank you for your answer. Here is the compressed surface file:
https://www.dropbox.com/s/orniixz2iy...Grid1.zip?dl=0

Best,

Zeno

[dgarlisch]

This file is invalid.

I did not notice it in your original post, but the facets have four vertices (quads) each.!

Valid STL files can only contain triangles.

I do not know how this file as generated, but it was exported incorrectly.

If you would like support for non-standard STL quads, you will need to log a feature request with Pointwise support.

FYI, the file also contains TWO solids that are coincident copies of the exact same mesh. This is probably not what you wanted.

Your file:

solid surface_mesh
  facet normal 0 1 4.44102e-16 
    outer loop
      vertex 0.75 -3.9746e-16 0.895 
      vertex 0.75 -3.81916e-16 0.86 
      vertex 0.745159 -3.81916e-16 0.859997 
      vertex 0.745 -3.9746e-16 0.895 
    endloop
  endfacet

  ..snip..

  facet normal -0.989661 0 0.143429 
    outer loop
      vertex 9.79667e-06 0.798573 6.7597e-05 
      vertex -1.57253e-16 0.798574 1.42499e-16 
      vertex -1.57253e-16 0.717292 1.42499e-16 
      vertex 9.79667e-06 0.717291 6.7597e-05 
    endloop
  endfacet
endsolid
solid surface_mesh
  facet normal 0 1 4.44102e-16 
    outer loop
      vertex 0.75 -3.9746e-16 0.895 
      vertex 0.75 -3.81916e-16 0.86 
      vertex 0.745159 -3.81916e-16 0.859997 
      vertex 0.745 -3.9746e-16 0.895 
    endloop
  endfacet

  ...snip...

  facet normal -0.989661 0 0.143429 
    outer loop
      vertex 9.79667e-06 0.798573 6.7597e-05 
      vertex -1.57253e-16 0.798574 1.42499e-16 
      vertex -1.57253e-16 0.717292 1.42499e-16 
      vertex 9.79667e-06 0.717291 6.7597e-05 
    endloop
  endfacet
endsolid