SnappyHexMesh questions

Ryoko · June 14, 2020, 15:10

I'm having a couple of issues with Snappy. The first is I'm getting blisters on my model's surface as seen in the first picture. The second issue is a strange quilting pattern in the refined mesh instead of a smoothly increasing grid distribution towards the model surface. I imagine these are just issues that need tweaking in the dictionary. But I don't know where to look. I'm using the dictionary from the DCTHull tutorial.

Rango · June 20, 2020, 23:40

Hi,

Have you checked the quality of your stl file(s)? Try to increase "tolerance" in "snapControls" part to see if you can get a smoother surface. If it is possible, please share your test case or a simpler version of it in order to get some more detailed and customized help on your specific problems.

Cheers

Ryoko · June 21, 2020, 11:52

I fiddled with the some of the settings in the SHM dictionary and the problem seems to have gone away. I'm not sure which one did the trick. I think it was the number of iterations.

June 14, 2020, 15:10	SnappyHexMesh questions	#1
Ryoko New Member M.Lewis Join Date: Jun 2020 Posts: 9 Rep Power: 7	I'm having a couple of issues with Snappy. The first is I'm getting blisters on my model's surface as seen in the first picture. The second issue is a strange quilting pattern in the refined mesh instead of a smoothly increasing grid distribution towards the model surface. I imagine these are just issues that need tweaking in the dictionary. But I don't know where to look. I'm using the dictionary from the DCTHull tutorial.

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June 20, 2020, 23:40		#2
Rango New Member Join Date: Jun 2020 Location: UK Posts: 22 Rep Power: 7	Hi, Have you checked the quality of your stl file(s)? Try to increase "tolerance" in "snapControls" part to see if you can get a smoother surface. If it is possible, please share your test case or a simpler version of it in order to get some more detailed and customized help on your specific problems. Cheers

June 21, 2020, 11:52		#3
Ryoko New Member M.Lewis Join Date: Jun 2020 Posts: 9 Rep Power: 7	I fiddled with the some of the settings in the SHM dictionary and the problem seems to have gone away. I'm not sure which one did the trick. I think it was the number of iterations.