Automatically include boundary conditions
*SBC3
i1, i2
i1: face ID, in {−1,−2,−3, 1, 2, 3}
i2: orientation ID in [1, 4]
This card is used to automatically include boundary conditions. There are 6 × 4 = 24 supported options. These options are depicted in the figure below. The face ID is -1 to fix the -x face, -2 for -y, -3 for -z, 1 for +x, 2 for +y, or 3 for +z. The orientation ID represents 1 of 4 specific orientations on the face selected by i1.

Automatic boundary conditions assigned by *SBC3