There are non-conformal cyclic bc in OF 2.0.x?

ivan_cozza · November 14, 2011, 06:00

Hi foamers,
I need to simulate a case with non-conformal cyclic bc (i.e. the mesh on the two sides of the cyclic interface cannot be the same). Is there any chance to do it in OF 2.0.x or the only way is to use OF-ext?

Thanks!
Ivan

laurensvd · November 15, 2011, 05:07

Is the geometry different or the mesh? Maybe you can check into the directmappedfield boundary condition.

ivan_cozza · November 15, 2011, 05:11

Quote:

Originally Posted by laurensvd

Is the geometry different or the mesh? Maybe you can check into the directmappedfield boundary condition.

The geometry is the same, but the mesh is not, as it is produced by an automatic mesh generator.

How does directmappedfield work?

Thanks a lot,
Ivan

ivan_cozza · November 15, 2011, 05:26

And more, my cyclic boundaries are circular periodic.

laurensvd · November 15, 2011, 05:34

I dont know anymore exactly how it works but check the source OFdir/src/finiteVolume/fvPatchFields/derived

There are several version of this direct mapped field and inside the code you can see at the top which information they require. Basically you need to declare somewhere the patch that you want mapped on the patch that you apply the BC to. I dont know if you can do that for both your patches as to simulate a cyclic condition.

danishdude · November 21, 2011, 13:59

Have you gotten this to work? If so, could you post the solution. Thanks,

-Michael

ivan_cozza · November 24, 2011, 06:34

No Michael,
unfortunately it actually doesn't work, as directMapped is mono-directional, is not possible a two-way coupling. Up to now it seems that the only solution is cyclicGGI, but you have to install the ext version...

November 14, 2011, 06:00	There are non-conformal cyclic bc in OF 2.0.x?	#1
ivan_cozza Senior Member Ivan Flaminio Cozza Join Date: Mar 2009 Location: Torino, Piemonte, Italia Posts: 210 Rep Power: 18	Hi foamers, I need to simulate a case with non-conformal cyclic bc (i.e. the mesh on the two sides of the cyclic interface cannot be the same). Is there any chance to do it in OF 2.0.x or the only way is to use OF-ext? Thanks! Ivan

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November 15, 2011, 05:07		#2
laurensvd Member Laurens Van Dyck Join Date: Jul 2011 Location: Netherlands/Germany Posts: 34 Rep Power: 14	Is the geometry different or the mesh? Maybe you can check into the directmappedfield boundary condition.

November 15, 2011, 05:26		#4
ivan_cozza Senior Member Ivan Flaminio Cozza Join Date: Mar 2009 Location: Torino, Piemonte, Italia Posts: 210 Rep Power: 18	And more, my cyclic boundaries are circular periodic.

November 15, 2011, 05:34		#5
laurensvd Member Laurens Van Dyck Join Date: Jul 2011 Location: Netherlands/Germany Posts: 34 Rep Power: 14	I dont know anymore exactly how it works but check the source OFdir/src/finiteVolume/fvPatchFields/derived There are several version of this direct mapped field and inside the code you can see at the top which information they require. Basically you need to declare somewhere the patch that you want mapped on the patch that you apply the BC to. I dont know if you can do that for both your patches as to simulate a cyclic condition.

November 21, 2011, 13:59		#6
danishdude New Member Michael Ahlmann Join Date: Feb 2010 Posts: 27 Rep Power: 16	Have you gotten this to work? If so, could you post the solution. Thanks, -Michael

November 24, 2011, 06:34		#7
ivan_cozza Senior Member Ivan Flaminio Cozza Join Date: Mar 2009 Location: Torino, Piemonte, Italia Posts: 210 Rep Power: 18	No Michael, unfortunately it actually doesn't work, as directMapped is mono-directional, is not possible a two-way coupling. Up to now it seems that the only solution is cyclicGGI, but you have to install the ext version...