Step.sif

Header
  Mesh DB "." "Step"
  Include Path ""
  Results Directory ""
End


Simulation
!  Max Output Level = 3
  Coordinate System =  Cartesian 2D
  Coordinate Mapping(3) = 1 2 3
  Simulation Type = Steady
  Steady State Max Iterations = 20
  Output Intervals = 1
! Post File = "Step.ep"
! Output File = "Step.dat"
End


Constants
  Gravity(4) = 0 -1 0 9.82
  Stefan Boltzmann = 5.67e-8
End


Body 1
  Name = "Body1"
  Equation = 1
  Material = 1
End


Equation 1
  Name = "Equation1"
  Navier-Stokes = True
  Active Solvers(2) = 1 2
End


Solver 1
   Equation = "Navier-Stokes"
   Linear System Solver = Iterative
   Linear System Iterative Method = BiCGStab
   Linear System Max Iterations = 500
   Stabilization Method = String Stabilized
   Linear System Convergence Tolerance = 1.0e-8
   Linear System Preconditioning = ILU0
   Linear System Residual Output = 1
   Steady State Convergence Tolerance = 1.0e-5
   Nonlinear System Convergence Tolerance = 1.0e-5
   Nonlinear System Max Iterations = 1
   Nonlinear System Newton After Iterations = 3
   Nonlinear System Newton After Tolerance = 1.0e-2
   Nonlinear System Relaxation Factor = 1.0
End

Solver 2
  Equation = "Xdmf"
  Procedure = "XdmfWriter" "XdmfWriter"
  Scalar Field 1 = String "Pressure"
  Vector Field 1 = String "Velocity"
  Base File Name = String "Results"
  Single Precision = Logical True
End

Material 1
  Name = "Material1"
  Density = 1
  Viscosity = 0.01
End

Boundary Condition 1
  Name = "Constraint2"

  Target Boundaries = 1

   Velocity 1 = 1
   Velocity 2 = 0
End

Boundary Condition 2
  Name = "Constraint2"
  Target Boundaries = 2

   Pressure = 0
   Velocity 2 = 0
End

Boundary Condition 3
  Name = "Constraint3"
  Target Boundaries = 3

   Velocity 1 = 0
   Velocity 2 = 0
End