[ANSYS Meshing] Improve Meshing

farias2014 · November 25, 2017, 13:25

Ansys is suggesting me do inverse orthogonality quality to improve the meshing. How do i get that? My orthogonality is 0.099 and my skewness is around 0.93 max and 0.2 min. How do i improve the skewness?

I am using tetrahedrons meshing with coarse, curvature, medium for span angle.

Gweher · November 26, 2017, 14:36

Hi Felix,

Difficult to say without a picture of your domain. But the numbers you mentioned represent a really bad mesh. You should increase the mesh density or use local refinement for problematic areas (with high skewed elements). Play around other mesh option instead of curvature, to proximity, play around with defeaturing options etc. Again a bit difficult to guess without additional pictures/problematic area info.

Best of luck

farias2014 · December 1, 2017, 13:29

Thanks for the advice. I will try to learn a how to use the refinement. Here is a picture in case some can give more detail feedback.
https://drive.google.com/open?id=1d5...Kx_MuTv1Z_sUvS
https://drive.google.com/open?id=109...vED_uGQyeC7sdr
https://drive.google.com/open?id=1Sa...mg1700r7gU-LGB

farias2014 · December 1, 2017, 13:30

Gweher · December 5, 2017, 01:59

You should definitively add refinements and inflation option to get your BL right

November 25, 2017, 13:25	Improve Meshing	#1
farias2014 New Member Felix Issac Arias Alvarez Join Date: Oct 2017 Posts: 5 Rep Power: 8	Ansys is suggesting me do inverse orthogonality quality to improve the meshing. How do i get that? My orthogonality is 0.099 and my skewness is around 0.93 max and 0.2 min. How do i improve the skewness? I am using tetrahedrons meshing with coarse, curvature, medium for span angle.

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November 26, 2017, 14:36		#2
Gweher Senior Member Gwenael H. Join Date: Mar 2011 Location: Switzerland Posts: 392 Rep Power: 20	Hi Felix, Difficult to say without a picture of your domain. But the numbers you mentioned represent a really bad mesh. You should increase the mesh density or use local refinement for problematic areas (with high skewed elements). Play around other mesh option instead of curvature, to proximity, play around with defeaturing options etc. Again a bit difficult to guess without additional pictures/problematic area info. Best of luck

December 1, 2017, 13:29		#3
farias2014 New Member Felix Issac Arias Alvarez Join Date: Oct 2017 Posts: 5 Rep Power: 8	Thanks for the advice. I will try to learn a how to use the refinement. Here is a picture in case some can give more detail feedback. https://drive.google.com/open?id=1d5...Kx_MuTv1Z_sUvS https://drive.google.com/open?id=109...vED_uGQyeC7sdr https://drive.google.com/open?id=1Sa...mg1700r7gU-LGB

December 1, 2017, 13:30		#4
farias2014 New Member Felix Issac Arias Alvarez Join Date: Oct 2017 Posts: 5 Rep Power: 8

December 5, 2017, 01:59		#5
Gweher Senior Member Gwenael H. Join Date: Mar 2011 Location: Switzerland Posts: 392 Rep Power: 20	You should definitively add refinements and inflation option to get your BL right