4 3 GfsSimulation GfsBox GfsGEdge {} {
  Refine 5
  Time { end = 20 }
  VariableTracer T
  VariableTracerVOF T1
  InitFraction T1 ((x)*(x) + y*y - 0.125*0.125)
  VariableCurvature K T1
  SourceTension T1 0.01 K
  SourceViscosity 1./400
  AdaptGradient { istep = 1 } { maxlevel = 7 cmax = 1e-2 } T1
  AdaptGradient { istep = 1 } {maxlevel = 6 cmax = 1e-2} T
  OutputTime { step = 1 } stderr
  OutputSimulation { step = 1 } stdout
}
GfsBox {
  pid = 0
  top  =  Boundary {
    BcDirichlet U 0
    BcDirichlet V 0
  }
  bottom  =  Boundary {
    BcDirichlet U 0
    BcDirichlet V 0
  }
  left = Boundary {
    BcDirichlet U ( (y > -0.05 && y < 0.05 ) ? 1 : 0 )	   
    BcDirichlet T ( (y > -0.05 && y < 0.05 ) ? 1 : 0 )
  }
}
GfsBox { pid = 1 }
GfsBox { pid = 2 }
GfsBox {
    pid = 3
    right = BoundaryOutflow
}
1 2 right
2 3 right
3 4 right