# boundary condition and differenet constant properties for for two different region.

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 January 25, 2011, 04:17 boundary condition and differenet constant properties for for two different region. #1 Member   Alpesh Vora Join Date: Jan 2011 Location: Cottbus, Germany Posts: 47 Rep Power: 7 Hello friends, I am new user with openfoam. the problem geometry is the small cube inside the big cube. The small cube inside the bigger cube is surrounded by air. I want to analize the current distribution in the full domain also in small cube. So, I can't consider the small cube as wall because I have to analyze the small cube surface current distribution. the problem is: the thermal conductivity is different for air and small cube. but, only one equation is used to solve the problem and that equation contain the thermal conductivity term. so, How I have to define the constant properties (thermal consuctivity) for two different region? and How I have to define the boundary condition at the small cube surface which is contact with air? Anyone can help..please.. thanx for your help. Kind regards Alpesh

 January 25, 2011, 04:30 #2 Senior Member   Matthias Voß Join Date: Mar 2009 Location: Berlin, Germany Posts: 446 Rep Power: 11 hi, take a look at chtMultiRegionFoam. neewbie

 January 25, 2011, 05:08 #3 Member   Alpesh Vora Join Date: Jan 2011 Location: Cottbus, Germany Posts: 47 Rep Power: 7 Hi neewbie sir, Thank you very much for quick reply.. kind regards alpesh

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