Osim 'gfs'-datoteke treba nam i half-cylinder.gfs datoteka s opisom
objekta oko kojega optice tekucina!

Bez viskoznosti

> gerris2D half-cylinder_6.gfs
> convert flow6.ppm flow6.mpg
> dragon flow6.mpg

S viskoznoscu:

> gerris2D half-cylinder_visc.gfs
> convert flow_visc.ppm flow_visc.mpg
> dragon flow_visc.mpg