The Screen condition models interior wire-gauzes, grilles, or perforated plates as thin permeable barriers. Common correlations are included for resistance and refraction coefficients. The Screen boundary condition can only be applied on interior boundaries.
The available options for the Screen type are
Wire gauze,
Square mesh,
Perforated plate, and
User defined. The settings are defined by the equations shown based on the selection (excluding User defined) which in turn adjusts what is available in the
Parameters section.
If Wire gauze,
Square mesh, or
Perforated plate is selected as the
Screen type, values or expressions for the
Solidity σs (ratio of blocked area to total area of the screen) should be specified.