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March 27, 2012, 11:41 |
AddLayers on an Airfoil
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#1 |
New Member
Roberto Della Ratta
Join Date: Apr 2011
Posts: 8
Rep Power: 15 |
Hi Foamers!
I have a problem in creating the Boundary Layer on an airfoil geometry with SHM. The castellated and snappy phase are ok whereas "addLayers " results in no layer added. Could someone help me? Thanks a lot Roberto I attach the snappyHexMeshDict and the log file for the addLayer phase Last edited by rdrr84; March 27, 2012 at 12:11. |
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March 27, 2012, 12:30 |
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#2 | |
Senior Member
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Have you tried this (from your log):
Quote:
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March 28, 2012, 05:42 |
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#3 |
New Member
Roberto Della Ratta
Join Date: Apr 2011
Posts: 8
Rep Power: 15 |
Hi!
thx for your answer. Yes I did it but no layer is added... I also changed the exp ratio to 0.1 to have a greater avg thickness. Roberto |
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March 28, 2012, 06:00 |
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#4 | ||
Senior Member
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I would suggest you to stick with the default parameters and then change only one of them at a time. Every time remember to get rid of every file mesh related.
For example, you set Quote:
/------------------------------------------ Layer 3 | c | /------------------------------------------ Layer 2 | b /------------------------------------------ Layer 1 |_a_______________________________ /////////////////////////////////////////// Wall expansionRatio = c/b = b/a The layers should grow in height when moving away from the wall. In your case they are getting smaller. Also Quote:
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April 18, 2012, 06:06 |
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#5 |
Senior Member
Mads Reck
Join Date: Aug 2009
Location: Copenhagen, Denmark
Posts: 177
Rep Power: 17 |
Do you need snappyHexMesh? If feasible for your airfoil you could use my little airfoil mesher, found here: http://hvirvel.dk/airfoilmesher/
Cheers, Mads
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Online free airfoil-mesher for OpenFOAM here |
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August 22, 2012, 02:46 |
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#6 |
Member
Andreas Wendy
Join Date: Aug 2012
Posts: 73
Rep Power: 13 |
Hi,
i have a question to the airfoil mesher. the linked website to worldofkrauss is not working to see the example dat-file. maybe you can show one? greetings Andy |
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August 22, 2012, 03:19 |
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#7 |
Retired Super Moderator
Bruno Santos
Join Date: Mar 2009
Location: Lisbon, Portugal
Posts: 10,975
Blog Entries: 45
Rep Power: 128 |
Greetings to all!
@Andy: Seems like the server for the worldofkrauss website is having bad luck. You can find some information here: http://www.rcgroups.com/forums/showt...3#post22118311 - it seems it was up again in July, but went down again now in August. Best regards, Bruno
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