• The Free (Open) Boundary Condition at inflow boundaries 

      Dimakopoulos, Y.; Karapetsas, G.; Malamataris, N. A.; Mitsoulis, E. (2012)
      The Free (or Open) Boundary Condition (FBC, OBC) was proposed by Papanastasiou et al. (A new outflow boundary condition, Int. J. Numer. Meth. Fluids 14 (1992) 587-608) to handle truncated domains with synthetic boundaries ...