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-   -   ChannelOodles with gmsh (http://www.cfd-online.com/Forums/openfoam-meshing-open/61880-channeloodles-gmsh.html)

lofty March 17, 2008 11:20

Hi Guys I wanna simulate a
 
Hi Guys

I wanna simulate a flow in channel with number of obstcales inside. Inlet and outlet faces are not same! Is it possible to build an OpenFOAM cyclic geometry out of a gmsh mesh? Thanks

lofty March 18, 2008 07:39

Hi May be no one understood
 
Hi

May be no one understood what i was trying to say. Let me put it another way. Can i use cyclic BC in OF on a domain that has walls/obstcales inside. Thank you in advance for your reply

sampaio March 18, 2008 08:10

Yes. You can. But your periodi
 
Yes. You can. But your periodic patches must be consistent.

lofty March 18, 2008 08:31

When you say "consistent", you
 
When you say "consistent", you mean opposite faces must be geometrically consistent right?

Thank you Luiz

OpenFOAM Newbie

sampaio March 18, 2008 11:06

Yes, geometrically consistent.
 
Yes, geometrically consistent.
Good luck,
luiz

lofty March 18, 2008 13:04

Is it gone be possible to use
 
Is it gone be possible to use blockMesh if my patches are same on opposite sides. Please note i want to use channelOodles solver. I have several 3D walls inside my channel.

Cyclic BC works fine when i have no wall inside the channel but as soon as i place a wall inside the channel it gives me an error. Any idea why is this happening? Thank you very much luiz

OpenFOAM Newbie

sampaio March 18, 2008 17:19

You have partial walls, right?
 
You have partial walls, right? I dont see any problem with that, and yes, you can use channelOodles.
Did you try checkMesh?
Good luck,
luiz

sripplinger April 16, 2008 16:44

I'm using a gmsh grid, too, bu
 
I'm using a gmsh grid, too, but I'm having issues getting the cyclic boundary conditions to work. The grid just has a rectangular inlet and outlet with walls on the top and bottom. I want the left and right sides to be cyclic, but when I try running icoFoam I get errors. I've also tried createPatches, but that fails, too.


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