Nikhil Narale
Ansys Employee

Hello,

 

You need to set the boundary conditions in the Fluent solver while setting up the case. 

This can be a good starting point for you: 7.4. Boundary Conditions (ansys.com)

If you are not able to access the link, please refer to this forum discussion: Using Help with links (ansys.com)

Let me know if there is anything specific you are not able to understand. 

 

Nikhil