Reynolds Number (Advanced) Calculator — Fórmula
## Reynolds Number
The Reynolds number predicts whether flow will be laminar (smooth) or turbulent (chaotic).
### Formula
**Re = rho v L / mu**
- *rho* = fluid density
- *v* = flow velocity
- *L* = characteristic length (pipe diameter, plate length)
- *mu* = dynamic viscosity
For pipe flow: Re < 2300 is laminar, 2300-4000 is transitional, > 4000 is turbulent.
The Reynolds number predicts whether flow will be laminar (smooth) or turbulent (chaotic).
### Formula
**Re = rho v L / mu**
- *rho* = fluid density
- *v* = flow velocity
- *L* = characteristic length (pipe diameter, plate length)
- *mu* = dynamic viscosity
For pipe flow: Re < 2300 is laminar, 2300-4000 is transitional, > 4000 is turbulent.
Ejemplo Resuelto
Water (rho = 1000, mu = 0.001) at 2 m/s through a 5 cm pipe.
- Re = rho v L / mu
- Re = 1000 * 2 * 0.05 / 0.001
- Re = 100 / 0.001 = 100 000
- This is well into the turbulent regime.