AF-Reynolds number

The Reynolds number is defined as
where:
- ρ is the density of the fluid (SI units: kg/m3).
- u is the velocity of the fluid with respect to the object (m/s).
- L is the Internal diameter of piper (m).
- μ is the dynamic viscosity of the fluid (Pa·s or N·s/m2 or kg/m·s).
- ν is the kinematic viscosity of the fluid (m2/s).

The Reynolds number calculator
Air/Fluid Density (ρ): [kg/m3]
Air/Fluid Velocity (u):  [m/s]
Internal Diameter (L):  [mm]
Dynamic Viscosity (µ): [Pa·s or N·s/m2 or kg/m·s]
Kinematic Viscosity (ν):  [m2/s]
Reynolds Number (Re):