[Other] Converting a scanned surface to a mesh

mankoff · February 11, 2013, 09:37

Hi,

I have a scanned surface as seen in the image below. I'd like to use this in OpenFOAM. I'd like examine how fluid flows over this surface, so I think the easiest way might be to have this become the roof of a pipe segment, with the walls and floor as simple straight boundaries that are no stick.

I collected the data as a point cloud with a scanner and then meshed it using 3rd party software. I have the CAELinux Virtual Machine so I can pass it through Engrid or gmsh or some other tools. I am seeking advice about which tool or workflow would be the best to modify the surface to become part of a pipe.

Thanks,

-k.

wyldckat · February 24, 2013, 16:59

Hi Ken,

If you use Google:

Code:

import terrain openfoam

you'll find a few threads on this topic

I'm not 100% certain, but I believe this thread might be the best on this topic: http://www.cfd-online.com/Forums/ope...tml#post260727

By the way, the advantage of using snappyHexMesh is that you do not need to create a tube, you can use a box and made directly with blockMesh.
In addition, you might want to look into the following add-ons for Blender:

Best regards,
Bruno

PS: for other readers, enGrid's related question has been answered here: http://www.cfd-online.com/Forums/eng...tml#post409829

mankoff · March 4, 2013, 12:18

Hi Bruno,

Thank you for your reply. Sorry for my delay, I was on vacation last week. I'll let the other EnGrid thread die out and continue here, since I am not using EnGrid.

I figured out to just use blockMesh and snappyHexMesh as you suggested, although I ended up figuring this out by using discretizer and the video tutorials on that website.

Regards,

Ken Mankoff

February 11, 2013, 09:37	Converting a scanned surface to a mesh	#1
mankoff New Member Ken Mankoff Join Date: Oct 2010 Posts: 7 Rep Power: 16	Hi, I have a scanned surface as seen in the image below. I'd like to use this in OpenFOAM. I'd like examine how fluid flows over this surface, so I think the easiest way might be to have this become the roof of a pipe segment, with the walls and floor as simple straight boundaries that are no stick. I collected the data as a point cloud with a scanner and then meshed it using 3rd party software. I have the CAELinux Virtual Machine so I can pass it through Engrid or gmsh or some other tools. I am seeking advice about which tool or workflow would be the best to modify the surface to become part of a pipe. Thanks, -k. Last edited by mankoff; February 11, 2013 at 12:41.

February 24, 2013, 16:59		#2
wyldckat Retired Super Moderator Bruno Santos Join Date: Mar 2009 Location: Lisbon, Portugal Posts: 10,982 Blog Entries: 45 Rep Power: 128	Hi Ken, If you use Google: Code: import terrain openfoam you'll find a few threads on this topic I'm not 100% certain, but I believe this thread might be the best on this topic: http://www.cfd-online.com/Forums/ope...tml#post260727 By the way, the advantage of using snappyHexMesh is that you do not need to create a tube, you can use a box and made directly with blockMesh. In addition, you might want to look into the following add-ons for Blender: http://openfoamwiki.net/index.php/Contrib/SwiftBlock http://openfoamwiki.net/index.php/Contrib/SwiftSnap Best regards, Bruno PS: for other readers, enGrid's related question has been answered here: http://www.cfd-online.com/Forums/eng...tml#post409829 __________________ OpenFOAM: FAQ \| Getting started Forum: How to get help, to post code/output and forum guide Read this before sending me PM

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March 4, 2013, 12:18		#3
mankoff New Member Ken Mankoff Join Date: Oct 2010 Posts: 7 Rep Power: 16	Hi Bruno, Thank you for your reply. Sorry for my delay, I was on vacation last week. I'll let the other EnGrid thread die out and continue here, since I am not using EnGrid. I figured out to just use blockMesh and snappyHexMesh as you suggested, although I ended up figuring this out by using discretizer and the video tutorials on that website. Regards, Ken Mankoff