One surface, two interface, is possibile?

fabioxyz · June 10, 2010, 10:09

Hi all,
my question is if is possible in CFX set two different interface for a single surface ? By default cfx says that there is a problem: same surface for 2 boundary condition. But how do you simulate a problem same mine?
the picture explain the problem. The upper surface of Body A is in contact with air (body B) and another solid body ( Body C). body C is hot and i want simulate the distribution of temperature in body A so body A has 2 interface: one with body B and one with body C ...how set up cfx-pre?
Thank you

ghorrocks · June 10, 2010, 18:24

You have to split the interface on solid A into two sections. One section interfaces with B and the other with C. You cannot have a single surface interface with multiple domains.

Pocket · June 11, 2010, 13:34

Maybe you could just use both downward faces of body C and Fluid B in the same Domain Interface definition.

Worked for me, but i connected one fluid domain face with two faces of separate solid domains.

Alternatively, have you thought about building both solids as one model and defining the hot part as a subdomain? Might be another workaround.

fabioxyz · June 15, 2010, 03:03

thank u, now i try the second Pocket's solution

June 10, 2010, 10:09	One surface, two interface, is possibile?	#1
fabioxyz New Member Fabio Join Date: Aug 2009 Posts: 6 Rep Power: 16	Hi all, my question is if is possible in CFX set two different interface for a single surface ? By default cfx says that there is a problem: same surface for 2 boundary condition. But how do you simulate a problem same mine? the picture explain the problem. The upper surface of Body A is in contact with air (body B) and another solid body ( Body C). body C is hot and i want simulate the distribution of temperature in body A so body A has 2 interface: one with body B and one with body C ...how set up cfx-pre? Thank you

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June 10, 2010, 18:24		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,700 Rep Power: 143	You have to split the interface on solid A into two sections. One section interfaces with B and the other with C. You cannot have a single surface interface with multiple domains.

June 11, 2010, 13:34		#3
Pocket New Member Daniel Paukner Join Date: Apr 2010 Posts: 17 Rep Power: 16	Maybe you could just use both downward faces of body C and Fluid B in the same Domain Interface definition. Worked for me, but i connected one fluid domain face with two faces of separate solid domains. Alternatively, have you thought about building both solids as one model and defining the hot part as a subdomain? Might be another workaround.

June 15, 2010, 03:03		#4
fabioxyz New Member Fabio Join Date: Aug 2009 Posts: 6 Rep Power: 16	thank u, now i try the second Pocket's solution