can I apply temperature boundary condition to tied element in heat transfer? 1

[roudan]

Hi

I am doing heat conduction between rock and a thin rod inside the rock. High Temperature is applied on thin rod to model heat conduction in the rock. I am using beam element B31 for thin rod and C3D8PT for rock. and I am using tie constraint to tie thin rod into rock.

I applied temperature boundary condition to thin rod. Why there is no any temperature result from either thin rod and rock? Could you please help me point the potential error? I am wondering if it is possible to apply temperature boundary condition to tied element?

Thank you so much

** Constraint: tie
*Tie, name=tie, adjust=yes
s_Surf-1, m_Surf-1

** BOUNDARY CONDITIONS
**
** Name: BC-T Type: Temperature
*Boundary
Set-rod, 11, 11, 300.

 

[FEA way]

In this thread you can find a discussion about a similar issue:

https://www.eng-tips.com/viewthread.cfm?qid=464475

It may be quite difficult to embed a beam into a solid and account for heat transfer between them since embedded region constraint (used in such cases for structural analyses) doesn't work for temperature DOFs. You may have to use a solid model of the rod.

 

[roudan]

Thank you so much FEA way. I will change to use sold model for the rod.