Formation time of the photospheric granulation for sets 1, 2, and 3 vs. a varying kinematic viscosity ν. Runs with low kinematic viscosity have formation times around 10 000 s, while the time increases for runs with a higher kinematic viscosity. All three sets show a similar behavior. The dashed vertical line indicates the kinematic viscosity in the upper solar convection zone according to Miesch (2005).