Rotating wall BC

stefano.garbin · September 2, 2010, 11:59

Hello foamers

My question was already asked before in this forum but I could not understand how to solve my problem: I need to impose to one or more patches a rotational velocity. How can I do this without modifying solvers? I saw about groovyBC, but I really could not understand how it works.
I'm using OF1.7 and simpleFoam with snappyHexMesh.

Thanks a lot!

Stefano

madad2005 · September 2, 2010, 12:16

I think this is the syntax for a rotating wall velocity.

rear-wheel
{
type rotatingWallVelocity;
origin (0, 0, 0);
axis (0, 1, 0);
omega 100; //rev/s, I believe
}

hope it helps.

Adriano

stefano.garbin · September 23, 2010, 06:11

Perfect!! It works great!
Thanks a lot!

Unfortunately there are many many things that are undocumented like this one...

madad2005 · September 23, 2010, 06:43

No problem.

All the boundary conditions are located in this directory:

OpenFOAM-1.6.x/src/finiteVolume/fields/fvPatchFields

Should help you in the future.

September 2, 2010, 11:59	Rotating wall BC	#1
stefano.garbin New Member Stefano Garbin Join Date: Sep 2010 Posts: 3 Rep Power: 15	Hello foamers My question was already asked before in this forum but I could not understand how to solve my problem: I need to impose to one or more patches a rotational velocity. How can I do this without modifying solvers? I saw about groovyBC, but I really could not understand how it works. I'm using OF1.7 and simpleFoam with snappyHexMesh. Thanks a lot! Stefano

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September 2, 2010, 12:16		#2
madad2005 Senior Member Anonymous Join Date: Mar 2009 Posts: 110 Rep Power: 17	I think this is the syntax for a rotating wall velocity. rear-wheel { type rotatingWallVelocity; origin (0, 0, 0); axis (0, 1, 0); omega 100; //rev/s, I believe } hope it helps. Adriano

September 23, 2010, 06:11		#3
stefano.garbin New Member Stefano Garbin Join Date: Sep 2010 Posts: 3 Rep Power: 15	Perfect!! It works great! Thanks a lot! Unfortunately there are many many things that are undocumented like this one...

September 23, 2010, 06:43		#4
madad2005 Senior Member Anonymous Join Date: Mar 2009 Posts: 110 Rep Power: 17	No problem. All the boundary conditions are located in this directory: OpenFOAM-1.6.x/src/finiteVolume/fields/fvPatchFields Should help you in the future.