subsection Compositional fields
  set Number of fields = 1
  set Compositional field methods = volume of fluid
end

subsection Volume of Fluid
  set Number initialization samples = 16
end

subsection Initial composition model
  set Model name = function
  set Volume of fluid initialization type = C_1:level set

  subsection Function
    set Variable names      = x,z
    set Function constants  = pi=3.1415926
    set Function expression = 0.2+0.02*cos(pi*x/0.9142)-z
  end
end
