WUFI requires assinging boundary conditions to an internal interface

[Lxr_Energy]

Hello,

I'm trying to do a moisture analysis for a multi-layer structure. when I go to surface/weather to set up boundary conditions, WUFI 2D asks to assign a boundary condition to an internal layer interface which is not exposed to the climate. Does that mean I did something wrong with the geometry?

Thanks,
Ray

[Christian Bludau]

Hi Ray,
if unidentified cavities (or holes) are left in the construction, a boundary condition must be assigned to them.
This could be used, for example, to take in account for heating pipes.
Normally, however, the construction should be modeled without cavities. Also for air cavities a layer must be created.
Christian

[Lxr_Energy]

Hi Christian,

Thanks for the reply. If I have cavities/holes in my assembly, for example, for heating pipes or air cavities, shall I use the "air layers" defined in the materials database? The reason why I'm asking is because it seems like the air layers pre-defined in the database are of certain thicknesses, and I don't know if for a custom air layer of specific thickness, shall I create new material in the database and modify the materail parameters, or I can just use the existing air layers in the database and change its thickness?

Thanks,
Ray