Conjugate Heat Transfer Issue

abc197 · July 15, 2013, 16:20

Is it possible to assign a constant temperature at interface(and interface_shadow) while coupled boundary condition is assigned for both.
In my case, I assigned a fixed temperature in solid cell zone, but interface temperature comes out much higher than this value. Somebody help please.

yashganatra · July 16, 2013, 04:25

Hi, I am having some issues with conjugate heat transfer. How did you create coupled walls?

abc197 · July 16, 2013, 05:03

I think , wall boundary condition should be used for interface in the pre-processor, then fluent will generate itself interface name_shadow boundary. You will see then coupled BC option for both and same should be used for conjugate effects.

ssixr · July 21, 2013, 15:07

Quote:

Originally Posted by abc197

Is it possible to assign a constant temperature at interface(and interface_shadow) while coupled boundary condition is assigned for both.
In my case, I assigned a fixed temperature in solid cell zone, but interface temperature comes out much higher than this value. Somebody help please.

what BC did you give for fluid zone?

abc197 · July 22, 2013, 00:49

At both fluid side and solid side interfaces, coupled BC is used. In cell zone conditions, for solid zone, I used fixed temperature, while for fluid zone, I did not specify any thing there. I used as usual BCs for fluid zone boundaries.
I guess its not possible to assign constant temperature at interface in conjugate case. We use coupled BCs there and its temperature will vary throughout.

July 15, 2013, 16:20	Conjugate Heat Transfer Issue	#1
abc197 Member Ravi Agrawal Join Date: Dec 2012 Posts: 40 Rep Power: 14	Is it possible to assign a constant temperature at interface(and interface_shadow) while coupled boundary condition is assigned for both. In my case, I assigned a fixed temperature in solid cell zone, but interface temperature comes out much higher than this value. Somebody help please.

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July 16, 2013, 04:25		#2
yashganatra Member Yash Ganatra Join Date: Mar 2013 Posts: 67 Rep Power: 14	Hi, I am having some issues with conjugate heat transfer. How did you create coupled walls?

July 16, 2013, 05:03		#3
abc197 Member Ravi Agrawal Join Date: Dec 2012 Posts: 40 Rep Power: 14	I think , wall boundary condition should be used for interface in the pre-processor, then fluent will generate itself interface name_shadow boundary. You will see then coupled BC option for both and same should be used for conjugate effects.

July 22, 2013, 00:49		#5
abc197 Member Ravi Agrawal Join Date: Dec 2012 Posts: 40 Rep Power: 14	At both fluid side and solid side interfaces, coupled BC is used. In cell zone conditions, for solid zone, I used fixed temperature, while for fluid zone, I did not specify any thing there. I used as usual BCs for fluid zone boundaries. I guess its not possible to assign constant temperature at interface in conjugate case. We use coupled BCs there and its temperature will vary throughout.