GfsOutputSimulation

From Gerris

GfsOutputSimulation will write a description of the current state of the simulation which contains both standard simulation parameters, layout of the cell hierarchy and associated variable values.

The syntax in parameter files is:

[ GfsOutput ] {
  depth = 5 
  variables = U,V,C 
  binary = 1 
  solid = 0 
  format = text
  precision = %.8f
}

with:

depth

an optional parameter setting the maximum depth which will be considered (the default is infinity).

variables

a comma-separated list of the names of the variables which will be written. The default is all the simulation permanent variables.

binary

an optional parameter specifying if a binary format should be used. Binary files allow faster reading of simulation files and are the default. Setting binary to 0 will use a more portable ASCII format.

solid

an optional parameter specifying if the surface describing solid boundaries should be included in the simulation file. The default is to include the solid surface.

format

an optional parameter specifying which file format to use:

• gfs: the standard Gerris format. This is the default.
• text: an ASCII file containing only cell coordinates and variable values. The first line of the text-formatted file contains a description of the different fields (column by column).
• VTK: the VTK file format.
• Tecplot: the Tecplot file format.

precision

an optional C formatting string used to convert floating-point numbers to their ASCII representation (only relevant for ASCII file formats). The default is %g.

Examples

• Rayleigh-Taylor instability

  OutputSimulation { step = 0.1 } stdout

• Boussinesq flow generated by a heated cylinder

  OutputSimulation { istep = 4 } stdout

• Turbulent air flow around RV Tangaroa

  OutputSimulation { istep = 4 } stdout

  OutputSimulation { start = end } simulation-sum {
      variables = SU,SV,SW,SU2,SV2,SW2
  }

• Coalescence of a pair of Gaussian vortices (Gerris logo)

    OutputSimulation { istep = 10 } stdout

• Lunar tides in Cook Strait, New Zealand

    OutputSimulation { istep = 20 } stdout { solid = 0 }

    OutputSimulation { start = end } end.gfs

• Air-water flow around a Series 60 cargo ship

    OutputSimulation { istep = 5 end = 4 } stdout

    OutputSimulation { start = 1 step = 1 } sim-%g.gfs

• "Garden sprinkler effect" in wave model

    OutputSimulation { step = 12 } sim-MINLEVEL-NTHETA-%g.gfs

    OutputSimulation { start = end } end-MINLEVEL-NTHETA.gfs    

• Convergence of the Poisson solver with solid boundaries

  OutputSimulation { start = end } sim-LEVEL { variables = P }

• Star-shaped solid boundary with refinement

    OutputSimulation { start = end } sim-LEVEL { variables = P }

• Star-shaped solid boundary

    OutputSimulation { start = end } sim-LEVEL { variables = P }

• Thin wall at box boundary

  OutputSimulation { start = end } sim-LEVEL { variables = P }

• Time-reversed advection with curvature-based refinement

    OutputSimulation { start = 2.5 } stdout

• Convergence for the three-way vortex merging problem

  OutputSimulation { start = 0.05 } stdout

  OutputSimulation { start = 0.15 } stdout

  OutputSimulation { start = 0.25 } stdout

  OutputSimulation { start = 0.25 } SIM

• Potential flow around a sphere

    OutputSimulation { start = end } sim-LEVEL.gfs

• Viscous flow past a sphere

    OutputSimulation { start = end } end-LEVEL-RE.gfs

• Mass conservation

    OutputSimulation { step = 0.2 } stdout

• Convergence of a potential flow solution

    OutputSimulation { start = end } sim-LEVEL {
        variables = U,V,P
    }

• Flow through a divergent channel

    OutputSimulation { start = end } sim-LEVEL {
        variables = U,V,P
    }

• Circular droplet in equilibrium

  OutputSimulation { start = end } stdout { depth = LEVEL }

• Axisymmetric spherical droplet in equilibrium

  OutputSimulation { start = end } stdout { depth = LEVEL }

• Geostrophic adjustment

  OutputSimulation { istart = 100 iend = 500 istep = 100 } stdout

  OutputSimulation { istart = 1500 } stdout

• Coastally-trapped waves

  OutputSimulation { start = end } sim-LEVEL

• Coastally-trapped waves with adaptive refinement

  OutputSimulation { start = end } sim-LEVEL