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: 13	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.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
conjugate heat transfer with phase change	mogoko	CFX	2	March 23, 2011 12:25
Conjugate Heat transfer in CFX	ksp1717	CFX	11	December 10, 2010 23:07
Conjugate Heat Transfer of Motorized EGR	enr_venkat	CFX	1	October 12, 2010 19:17
How can I increase Heat Transfer at Domain Interf?	B.Simon	CFX	3	October 28, 2008 19:53
Convective Heat Transfer - Heat Exchanger	Mark	CFX	6	November 15, 2004 16:55

July 16, 2013, 04:25		#2
yashganatra Member Yash Ganatra Join Date: Mar 2013 Posts: 67 Rep Power: 13	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: 13	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: 13	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.