Facets can be created on preprocessing surfaces and postprocessing surfaces.
Facet Values on Zone Surfaces
The interior facets on a zone surface are associated with two cells (c0 and c1). The values of specified variable on such facets are computed as the average of the two cell values of the selected variable.
The boundary facet values of a specified field variable on a zone surface are computed from the boundary condition provided by the user.
Facet Values on Postprocessing Surfaces
The facets on a postprocessing surface are associated with one cell. The values of a specified variable on such facets are the same as the cell values of the selected variable in the associated cells.