Dye Regions

Dye regions in a simulation can be defined with the same or different colors. As a fluid particle (irrespectable of its phase definition/density) passes through a given dye region, it will get assigned that regions defined color (integer, scalar property which is then output in the particle data). Usage of dye regions eliminates the need of using multiple FLUID phase definitions in order to track the fluid flow from a specific location. Dye regions can only be spherical in shape. If a particle passes through multiple dye regions, it will adopt the color of the last dye region through which it passed.

dyeRegions
{
    dyeRegion
    {
        dyeregion_clr           1                           
        dyeregion_cntr          "0.0 0.1 0.2"               
        dyeregion_rad           0.1                         
        dyeregion_radodx        2.5                         
        dyeregion_tstart        0.0                         
        dyeregion_tend          1.0                         
    }
}

dyeregion_clr

Color assigned to the dye region.

dyeregion_cntr

Center coordinates of the dye region sphere.

dyeregion_rad

Radius of the dye region sphere. Unit: [m]

dyeregion_radodx

Radius of the dye region sphere as a function of dx, for example, when specified 3.0, implies 3.0*dx.

If both dyeregion_rad and dyeregion_radodx are present, the latter takes precedence.

dyeregion_tstart

Start time of dye injection.

dyeregion_tend

End time of dye injection.