Solid Solid interface problem when using orthotropic material properties

timoha91 · March 2, 2016, 01:38

Hello everybody!
Tried to search this problem but still cant find the answer.
The problem is when i set up through command editor orthotrpic properties as follows:
THERMAL CONDUCTIVITY :
Option = Orthotropic Cartesian Components
Thermal Conductivity X Component = 60 [W m^-1 K^-1]
Thermal Conductivity Y Component = 60 [W m^-1 K^-1]
Thermal Conductivity Z Component = 0.3 [W m^-1 K^-1]
END.
as the result, i get very impressive temperature raises around near the solid solid interfaces like they dont work at all. I heard it can work if i set up 1:1 mesh connection in these interfaces, but i only have one GGI option in cfx-pre. How to deal with this?
Thanks in advance!
pic.jpg

ghorrocks · March 2, 2016, 18:42

I understand orthotropic thermal conductivity is a beta feature only, so you should be aware of strange results when using this model.

So if you have heard that it works with 1:1 mesh connections then you should try that. You will probably have to remesh to do this.

timoha91 · March 3, 2016, 00:10

thanks for your reply, but the next question out of this is how can i remesh these faces for 1:1 connection (ansys mesher), when match control tool is only available for faces of one body?

ghorrocks · March 3, 2016, 00:16

I would do this using multibody parts to enforce a 1:1 mesh.

Try the geometry and meshing forum for a more complete answer.

March 2, 2016, 01:38	Solid Solid interface problem when using orthotropic material properties	#1
timoha91 New Member teymur ataev Join Date: Dec 2015 Posts: 2 Rep Power: 0	Hello everybody! Tried to search this problem but still cant find the answer. The problem is when i set up through command editor orthotrpic properties as follows: THERMAL CONDUCTIVITY : Option = Orthotropic Cartesian Components Thermal Conductivity X Component = 60 [W m^-1 K^-1] Thermal Conductivity Y Component = 60 [W m^-1 K^-1] Thermal Conductivity Z Component = 0.3 [W m^-1 K^-1] END. as the result, i get very impressive temperature raises around near the solid solid interfaces like they dont work at all. I heard it can work if i set up 1:1 mesh connection in these interfaces, but i only have one GGI option in cfx-pre. How to deal with this? Thanks in advance! pic.jpg

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March 2, 2016, 18:42		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,871 Rep Power: 144	I understand orthotropic thermal conductivity is a beta feature only, so you should be aware of strange results when using this model. So if you have heard that it works with 1:1 mesh connections then you should try that. You will probably have to remesh to do this.

March 3, 2016, 00:10		#3
timoha91 New Member teymur ataev Join Date: Dec 2015 Posts: 2 Rep Power: 0	thanks for your reply, but the next question out of this is how can i remesh these faces for 1:1 connection (ansys mesher), when match control tool is only available for faces of one body?

March 3, 2016, 00:16		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,871 Rep Power: 144	I would do this using multibody parts to enforce a 1:1 mesh. Try the geometry and meshing forum for a more complete answer.