Calculateur de Débit — Formule
## Volumetric & Mass Flow Rate
Flow rate through a pipe depends on the cross-sectional area and the average fluid velocity.
### Formulas
**Q = A V = (pi D^2 / 4) V** (volumetric flow)
**m_dot = rho Q = rho A V** (mass flow)
where D is the pipe diameter, V is the average velocity, and rho is the fluid density.
Flow rate through a pipe depends on the cross-sectional area and the average fluid velocity.
### Formulas
**Q = A V = (pi D^2 / 4) V** (volumetric flow)
**m_dot = rho Q = rho A V** (mass flow)
where D is the pipe diameter, V is the average velocity, and rho is the fluid density.
Exemple Résolu
Water flowing at 2 m/s through a 100 mm diameter pipe.
- D = 100 mm = 0.1 m
- A = pi x 0.1^2 / 4 = 0.007854 m^2
- Q = 0.007854 x 2 = 0.01571 m^3/s = 15.71 L/s
- Mass flow = 1000 x 0.01571 = 15.71 kg/s