fluid generation in a power supply model

[Dan_Margulius]

Hello,

How can I create air (internal fluid) in a power supply assembly. The assembly is closed, think of it as a big long box wih cards inside and heatsinks and I need to know how to generate internal air...

Thanks,

Dan

[Dan_Margulius]

Guys...Someone here has to know how to create internail air in a big closed box with wall thickness of 2mm...

By the way the internal air can't be modeled in the CAD environment in this case.

Thanks,

Dan