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Meshing error with STL geometry

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Old   March 30, 2017, 04:08
Default Meshing error with STL geometry
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Varnis Charalambous
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I have created a VAWT blade, using QBlade, with symmetrical aerofoil and specific geometry of 2m in height and 0.3m in chord (spanwise and chordwise points have been set to 400 and 40 respectively). I have exported that to stl file and imported to Ansys CFX, but during meshing it pops up this error:

"The mesh generation did not complete due to poor quality elements or incorrect input. Please try meshing with another mesh method or different mesh options."

I have tried changing the geometry but to no avail. I have also amended the meshing properties but still no result. Any help would be appreciated.

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Old   March 30, 2017, 18:29
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Glenn Horrocks
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This usually occurs when one of the following occurs:
* The CAD description of the surfaces is very poor and gives the mesher a hard time
* The CAD contains areas which are hard to mesh:
** Surfaces very close
** Thin gaps
** Very sharp points
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