4 3 GfsSimulation GfsBox GfsGEdge {} { Refine 6 Solid (x*x + y*y - 0.125*0.125) Time {end = 10} SourceViscosity 1./400. #OutputLocation { step = 1 } data positionXYZ #OutputLocation { step = 1 } data0.45 positionX0.45YZ #OutputLocation { step = 1 } data1.45 positionX1.45YZ OutputSimulation { start = end } file10.gts OutputTime { step = 1 } stdout } GfsBox { left = Boundary { BcDirichlet U 1 } top = Boundary { BcDirichlet U 0 BcDirichlet V 0 } bottom = Boundary { BcDirichlet U 0 BcDirichlet V 0 } } GfsBox { top = Boundary { BcDirichlet U 0 BcDirichlet V 0 } bottom = Boundary { BcDirichlet U 0 BcDirichlet V 0 } } GfsBox { top = Boundary { BcDirichlet U 0 BcDirichlet V 0 } bottom = Boundary { BcDirichlet U 0 BcDirichlet V 0 } } GfsBox { right = BoundaryOutflow top = Boundary { BcDirichlet U 0 BcDirichlet V 0 } bottom = Boundary { BcDirichlet U 0 BcDirichlet V 0 } } 1 2 right 2 3 right 3 4 right