imulation GfsBox GfsGEdge {} { Refine 5 Time {end = 5} SourceViscosity 1. OutputLocation { start = end } data.dat positionXYZ OutputSimulation { step = 1 } tt.gfs OutputTime { step = 1 } stdout } GfsBox { left = Boundary { BcDirichlet U 1 } right = BoundaryOutflow top = Boundary { BcDirichlet U 0 BcDirichlet V 0 } bottom = Boundary { BcDirichlet U 0 BcDirichlet V 0 } }