The Flow Continuity condition is suitable for pairs where the boundaries match; it prescribes that the flow field is continuous across the pair.
A Wall subnode is added by default and it applies to the parts of the pair boundaries where a source boundary lacks a corresponding destination boundary and vice versa. The
Wall feature can be overridden by any other boundary condition that applies to exterior boundaries. By right-clicking the
Flow Continuity node, additional Fallback feature subnodes can be added.
The Wall fallback condition is incompatible with the
Low Re wall treatment for the k-
ω, SST, and Low Reynolds number k-
ε turbulence models.