Weber Number formula:
   W_e = ρ * v² * L / σ
where:
   W_e:Weber Number, dimensionless
   ρ: Fluid Density, in Kg/m^3
   v: Fluid Speed (velocity), in meter/second
   L: Characteristic Length, in meter
   σ: Surface Tension, in N/m

The Weber number is named after Moritz Weber. It is used to analyse fluid flows when there is an interface between two different fluids.