# Boundary Condition

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 January 2, 2006, 07:43 Boundary Condition #1 Katja Guest   Posts: n/a Hello, I try it another time. I`m a Student from RWTH Aachen and I need to know a possibility, how one can set different heat transfer coefficients at the opposite sides of a blockage object as boundary condition? I want to compute a simple simulation for the heat transfer through a wall. Thanks Katja

 January 3, 2006, 05:37 Re: Boundary Condition #2 Mike Guest   Posts: n/a A possibility is to create a WALL-TYPE user-defined object for each opposite surface of the object. The resulting patches will over-ride the EGWF(Earth-generated-wall-function) application on the interface boundary conditions on the two opposite surfaces. These wall-type user-defined objects will have CO=GRND2 VAL=0.0 for the wall-aligned velocities, CO=GRND2 VAL=GRND2 for ke and ep, and CO=Heat transfer coefficient VAL=SAME for TEM1. In the first instance it would be advisable to test this out on a very simple case so as to allow checking of the results. In PHOENICS V3.6.1 I believe that you can specify a heat transfer coefficient for the blockage object as an alternative to the heat transfer coefficient computed automatically by the wall functions. If you do this, then of course, only one WALL-TYPE patch need be applied, as described above, so as to specify the other heat transfer coefficient.

 January 9, 2006, 12:02 Re: Boundary Condition #3 Katja Guest   Posts: n/a Thank you Mike, I will try it out

 March 11, 2006, 07:39 periodic boundary condition? #4 Sima Baheri Guest   Posts: n/a How can we apply periodic boundary condition in Phoenics, when the grid has been created in ICE-CFD?

 April 19, 2006, 01:05 Boundary Condition( Hypersonic Reactive flow) #5 Pabitra Halder Guest   Posts: n/a Hello, I need to know about the far field as well as solid boundary condition for hypersonic reactive flow. Thanking you, Pabitra

 December 12, 2006, 16:15 how to apply periodic boundary conditions in ansys #6 narender Guest   Posts: n/a can any one tell me how to apply periodic boundary conditions in ansys