The diameter, D, of fluid droplets produced by a liquid spray nozzle is known to be a function of the nozzle diameter d, the liquid velocity at the nozzle exit V, and the fluid properties density,...

The diameter, D, of fluid droplets produced by a liquid spray nozzle is known to be a function of the nozzle diameter d, the liquid velocity at the nozzle exit V, and the fluid properties density, viscosity, and surface tension, ρ, µ, and σ. Determine the number of Pi groups that can be formed from these six parameters.