chtMultiRegionSimpleFoam: varying Kappa

derekm · March 31, 2016, 09:50

I need to subdivide the solid regions into volumes with different isotropic conductivities.(kappa) (already at 13 regions with a potential 70 subregions) I was looking at scalarsemimplicitsource or vectorsemimplicitsource.
anyone done it this way?
is there another approach?

regards Derek

opedrofunk · March 31, 2016, 14:42

Hi Derek,
It probably depends a bit on what you are trying to achieve. However, why not just create discrete regions in your geometry, mesh it, and assign properties as normal?
Kind regards,
Peter

derekm · March 31, 2016, 15:41

Quote:

Originally Posted by opedrofunk

Hi Derek,
It probably depends a bit on what you are trying to achieve. However, why not just create discrete regions in your geometry, mesh it, and assign properties as normal?
Kind regards,
Peter

80 discrete Regions? with all the files in Const and system to add and modify?
13 is bad enough

opedrofunk · March 31, 2016, 17:24

Hello,

Well, the meshing is straightforward and a simple script can take care the constant files and BCs. :-) Alternatively, you could modify and roll your own solidThermo library with kappa as a field variable (i.e., one that you could set per cell in the mesh).

If it were me, I would just take an hour and do the former, but then that's the beauty of open source - lots of ways to solve problems!

Good luck!
Peter

akidess · April 1, 2016, 04:22

kappa is a volScalarField read from an input file, right? Then you can work with topoSet and setFields to define it.

March 31, 2016, 09:50	chtMultiRegionSimpleFoam: varying Kappa	#1
derekm Senior Member Derek Mitchell Join Date: Mar 2014 Location: UK, Reading Posts: 172 Rep Power: 13	I need to subdivide the solid regions into volumes with different isotropic conductivities.(kappa) (already at 13 regions with a potential 70 subregions) I was looking at scalarsemimplicitsource or vectorsemimplicitsource. anyone done it this way? is there another approach? regards Derek __________________ A CHEERING BAND OF FRIENDLY ELVES CARRY THE CONQUERING ADVENTURER OFF INTO THE SUNSET

April 1, 2016, 04:22		#5
akidess Senior Member Anton Kidess Join Date: May 2009 Location: Germany Posts: 1,377 Rep Power: 30	kappa is a volScalarField read from an input file, right? Then you can work with topoSet and setFields to define it. __________________ On twitter @akidTwit Spend as much time formulating your questions as you expect people to spend on their answer.

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March 31, 2016, 14:42		#2
opedrofunk Member Peter Join Date: Feb 2015 Location: New York Posts: 73 Rep Power: 11	Hi Derek, It probably depends a bit on what you are trying to achieve. However, why not just create discrete regions in your geometry, mesh it, and assign properties as normal? Kind regards, Peter

March 31, 2016, 17:24		#4
opedrofunk Member Peter Join Date: Feb 2015 Location: New York Posts: 73 Rep Power: 11	Hello, Well, the meshing is straightforward and a simple script can take care the constant files and BCs. :-) Alternatively, you could modify and roll your own solidThermo library with kappa as a field variable (i.e., one that you could set per cell in the mesh). If it were me, I would just take an hour and do the former, but then that's the beauty of open source - lots of ways to solve problems! Good luck! Peter