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-   -   SnappyHexMesh and Snapping (http://www.cfd-online.com/Forums/openfoam-meshing-utilities/61490-snappyhexmesh-snapping.html)

thomasr July 25, 2008 09:51

I am trying to mesh a 3D wing
 
I am trying to mesh a 3D wing with snappyHexMesh. So far I have used the parameters of the motorBike example to operate snappyHexMesh. According to the output of snappyHexMesh everything goes well. However, if I look to the final mesh, the cells at the wing surface are not adjusted (snapped) to the surface (see picture). Which would be the parameter to control this? Is there a tutorial by which snappyHexMesh can be tried out?

Thanks,

Thomas

thomasr July 25, 2008 09:55

Sorry, I missed the point to a
 
Sorry, I missed the point to attach the picture:

http://www.cfd-online.com/OpenFOAM_D...ges/1/8497.jpg

wolle1982 February 16, 2009 09:26

in the snappyHexMesh Dict at t
 
in the snappyHexMesh Dict at the very top there you have to set the snapcontrol to "true". furthermore you have to switch to timestep 2 and 3 to see the snapped result. the picture you posted seems to be timestep 1.

tachyon_me June 15, 2010 20:48

tutorial one more to check it out
 
http://www.opencfd.uphero.com/foam_meshing.htm

hhh February 1, 2012 13:09

synappy hex mesh
 
Dear foamers,
i have problem in snappy hex mesh, i have cad model in stl format,how i solve in open foam,
1.how to import
2.how to create outer domain
3.how to mesh the model
4.how to set boundary condition,for my i consider to create domain to set
inlet velocity ,pressure outlet and remaining face is symmetry wall is cad model
5.how to run
i am begineer please give idea for to this problem

lovecraft22 March 15, 2012 13:07

Quote:

Originally Posted by hhh (Post 342304)
Dear foamers,
i have problem in snappy hex mesh, i have cad model in stl format,how i solve in open foam,
1.how to import
2.how to create outer domain
3.how to mesh the model
4.how to set boundary condition,for my i consider to create domain to set
inlet velocity ,pressure outlet and remaining face is symmetry wall is cad model
5.how to run
i am begineer please give idea for to this problem

1. Import what? The geometry must be inside constant/triSurface
2. using BlockMesh, have a look at the motorbike tutorial for instance;
3. Using snappyHexMesh, again, have a look at the motorbike tutorial;
4. Again… motorbike… also reading the manual would help…probably spending the same amount of time you used to write this post in reading the manual would have helped a lot more…
5. guess what… motorbike and manual…


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