Interior Surface as a Wall boundary conditions

Models with multiple bodies will have interior face elements which should not be selected wall BC.

For example, The model below has 4 bodies. Between adjacent bodies there are interior face elements which should not be selected while creating wall BCs.

To avoid selection of interior face elements,

1. Avoid window selection where interior face elements can get selected. Instead select surfaces for one body at a time.

   Avoid	Best Practice

2. Create face group of all interior elements and hide them.