May 15, 2023 at 4:54 am
C N
Ansys Employee

Hello,

I recommend you to go through this user guide link in order to understand how to set up the semi transparent boundary wall condition for the DO model set up . 5.3.6. Discrete Ordinates (DO) Radiation Model Theory (ansys.com)  In that refer 

5.3.6.7.1. Semi-Transparent Interior Walls

I hope this helps you in understanding the boundary conditon set up.

Thanks

Chaitanya Natraj