Two coordinate systems in one region

cheetthe1 · March 17, 2020, 18:38

I want to define radial BC profiles at two differently oriented boundaries of one region. The only setting I found to have an effect on the region COS is under physics values -> axis, defining the proper COS there. Obviously that method allows to define ONE custom COS per region, so as of now only one radial profile at a time works. Steady model.

Is there any other way to define that, two regions is not an option, the internal interface boundary is horrible.

Thanks,
cheet

cheetthe1 · March 18, 2020, 22:27

That response is crap, but I am hoping someone might still have a helpful suggestion.

We want to avoid using a (signal),x,y,z profile for the second boundary and define that relative to the first boundary with proper local COS applied.

Thanks

me3840 · March 19, 2020, 14:15

Why don't you split the boundary in two and specify the boundary condition for each using independent coordinate systems?

cheetthe1 · March 19, 2020, 14:27

Yes, it is two individual boundaries. What should I set the reference frames to? Do I get the second COS by rotating the first custom one? As I was saying I am aware of those functions but they have not worked for me, whatever I specify there is being overwritten by the physics -> axis section which is valid for the entire region. If you could tell me the exact settings to get that working will be great help.

Thank you !
Cheet

March 17, 2020, 18:38	Two coordinate systems in one region	#1
cheetthe1 Member Bernhard Stiehl Join Date: Oct 2018 Posts: 30 Rep Power: 7	I want to define radial BC profiles at two differently oriented boundaries of one region. The only setting I found to have an effect on the region COS is under physics values -> axis, defining the proper COS there. Obviously that method allows to define ONE custom COS per region, so as of now only one radial profile at a time works. Steady model. Is there any other way to define that, two regions is not an option, the internal interface boundary is horrible. Thanks, cheet

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March 18, 2020, 22:27		#2
cheetthe1 Member Bernhard Stiehl Join Date: Oct 2018 Posts: 30 Rep Power: 7	That response is crap, but I am hoping someone might still have a helpful suggestion. We want to avoid using a (signal),x,y,z profile for the second boundary and define that relative to the first boundary with proper local COS applied. Thanks

March 19, 2020, 14:15		#3
me3840 Senior Member Join Date: Nov 2010 Location: USA Posts: 1,232 Rep Power: 24	Why don't you split the boundary in two and specify the boundary condition for each using independent coordinate systems?

March 19, 2020, 14:27		#4
cheetthe1 Member Bernhard Stiehl Join Date: Oct 2018 Posts: 30 Rep Power: 7	Yes, it is two individual boundaries. What should I set the reference frames to? Do I get the second COS by rotating the first custom one? As I was saying I am aware of those functions but they have not worked for me, whatever I specify there is being overwritten by the physics -> axis section which is valid for the entire region. If you could tell me the exact settings to get that working will be great help. Thank you ! Cheet