GfsVariablePosition

From Gerris

GfsVariablePosition contains one of the coordinates of the position of the VOF fragment contained in the cell. If the cell does not contain an interface, the variable value is set to G_MAXDOUBLE.

The syntax in parameter files is

[ GfsVariableCurvature ] COMPONENT (REF)

where COMPONENT is x, y or z and REF is an optional (default is zero) reference coordinate value.

Examples

• Collapse of a column of grains

    VariablePosition X T x

    VariablePosition Y T y

• Savart--Plateau--Rayleigh instability of a water column

    VariablePosition Y T y

    VariablePosition Z T z

• Air-water flow around a Series 60 cargo ship

    VariablePosition Z T z

• Planar capillary waves

  VariablePosition Y T y

• Air-Water capillary wave

  VariablePosition Y T y

• Fluids of different densities

  VariablePosition Y T y

• Pure gravity wave

  VariablePosition {} Y T y

• Scalings for Plateau--Rayleigh pinchoff

   VariablePosition Y T y