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Steady state solution in chtMultiRegionSimpleFoam depends on kappa (t. conductivity)?

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Old   May 7, 2014, 09:56
Default Steady state solution in chtMultiRegionSimpleFoam depends on kappa (t. conductivity)?
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Hello

I use chtMultiRegionSimpleFoam solver. My case is very simple. I have a box 1x1x2m with two aeras (hot and cold air) and baffle. I want to have steady state solution, and I think there is only one solition for my case (heat flow through baffle until temperatures in two aeras are the same).

But if I change the value of kappa in thermophysicalProperties for solid I have different final temperature in my box (!)
hotair >>> 400 K
cold air >>> 300 K

kappa=80 >>> T_final~310
kappa=8 >>> T_final~340
kappa=800 >>> T_final~300

Does anyone can help? Why kappa (thermal conductivity) change my steady-state solution? Other variables in thermophysicalProperties does not influence on solution...

Case is very simple and small (1 Mb), ready to run:
http://speedy.sh/4mGcf/my-case.zip
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