How to create a new cyclic BC

gregdB · February 9, 2012, 08:01

Hi all,

I have been attempting to replicate the fan BC so that I can create my own derived type of cyclic BC. All has been going OK by following:

http://openfoamwiki.net/index.php/Ho...dary_condition

But I have a problem. There is no entry for fixedJumpFvPatchField.C or equivalent in $FOAM_SRC/finiteVolume/Make/files ? How can this be copied and how can it be complied in the first place without an entry here?

Any help would be very much appreciated.

Cheers,
Greg

stevenvanharen · February 9, 2012, 10:56

I am confused, where did you find this C-file? Why do you expect an entry for this in the Make-file?

gregdB · February 9, 2012, 12:00

The C and H files for fixedJump are found in $FOAM_SRC/finiteVolume/fields/fvPatchFields/derived/fixedJump

To create a BC I copy a similar one from $FOAM_SRC/finiteVolume/fields/fvPatchFields/... and after changing the names then look-up from $FOAM_SRC/finiteVolume/Make/files for the correct entries needed to compile it. All BC's eg fan, jumpCyclic etc have entries in here so that they can be copied yet fixedJump does not?

stevenvanharen · February 10, 2012, 07:22

Ah ok, sorry, was looking in the wrong OF version.

fixedJump does not have an entry since it is not a boundary condition. It is just a parent-class for the fan boundary condition. It will be compiled since it is included in the fan b.c. files.

Maybe try to base your new b.c. on the fan b.c.?

gregdB · February 10, 2012, 07:56

I see, unfortunately I need to change jumpCyclic, fixedJump and fan bc so that I can get what I need. If I change fixedJump as well as fan and then include all the files when compiling fan hopefully that will work?

stevenvanharen · February 10, 2012, 08:19

Yes, that will work. But make sure you include the updated files and not the files from the lnInclude folder.

gregdB · February 10, 2012, 09:40

Thanks, it complies and runs. All I now need to do now is change the code! Cheers, Greg

February 9, 2012, 08:01	How to create a new cyclic BC	#1
gregdB New Member Gregory N de Boer Join Date: Dec 2011 Posts: 12 Rep Power: 14	Hi all, I have been attempting to replicate the fan BC so that I can create my own derived type of cyclic BC. All has been going OK by following: http://openfoamwiki.net/index.php/Ho...dary_condition But I have a problem. There is no entry for fixedJumpFvPatchField.C or equivalent in $FOAM_SRC/finiteVolume/Make/files ? How can this be copied and how can it be complied in the first place without an entry here? Any help would be very much appreciated. Cheers, Greg

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February 9, 2012, 10:56		#2
stevenvanharen Senior Member Steven van Haren Join Date: Aug 2010 Location: The Netherlands Posts: 149 Rep Power: 15	I am confused, where did you find this C-file? Why do you expect an entry for this in the Make-file?

February 9, 2012, 12:00		#3
gregdB New Member Gregory N de Boer Join Date: Dec 2011 Posts: 12 Rep Power: 14	The C and H files for fixedJump are found in $FOAM_SRC/finiteVolume/fields/fvPatchFields/derived/fixedJump To create a BC I copy a similar one from $FOAM_SRC/finiteVolume/fields/fvPatchFields/... and after changing the names then look-up from $FOAM_SRC/finiteVolume/Make/files for the correct entries needed to compile it. All BC's eg fan, jumpCyclic etc have entries in here so that they can be copied yet fixedJump does not?

February 10, 2012, 07:22		#4
stevenvanharen Senior Member Steven van Haren Join Date: Aug 2010 Location: The Netherlands Posts: 149 Rep Power: 15	Ah ok, sorry, was looking in the wrong OF version. fixedJump does not have an entry since it is not a boundary condition. It is just a parent-class for the fan boundary condition. It will be compiled since it is included in the fan b.c. files. Maybe try to base your new b.c. on the fan b.c.?

February 10, 2012, 07:56		#5
gregdB New Member Gregory N de Boer Join Date: Dec 2011 Posts: 12 Rep Power: 14	I see, unfortunately I need to change jumpCyclic, fixedJump and fan bc so that I can get what I need. If I change fixedJump as well as fan and then include all the files when compiling fan hopefully that will work?

February 10, 2012, 08:19		#6
stevenvanharen Senior Member Steven van Haren Join Date: Aug 2010 Location: The Netherlands Posts: 149 Rep Power: 15	Yes, that will work. But make sure you include the updated files and not the files from the lnInclude folder.

February 10, 2012, 09:40		#7
gregdB New Member Gregory N de Boer Join Date: Dec 2011 Posts: 12 Rep Power: 14	Thanks, it complies and runs. All I now need to do now is change the code! Cheers, Greg