Calculadora de Flujo en Vertederos — Fórmula
## Rectangular Weir Flow
A weir is a barrier across a channel over which water flows. The flow rate relates to the upstream head.
### Formula
**Q = (2/3) Cd b sqrt(2g) H^(3/2)**
where Cd is the discharge coefficient, b is the weir width, g = 9.81 m/s^2, and H is the head (water depth above the crest measured upstream). This formula applies to rectangular, full-width (suppressed) weirs.
A weir is a barrier across a channel over which water flows. The flow rate relates to the upstream head.
### Formula
**Q = (2/3) Cd b sqrt(2g) H^(3/2)**
where Cd is the discharge coefficient, b is the weir width, g = 9.81 m/s^2, and H is the head (water depth above the crest measured upstream). This formula applies to rectangular, full-width (suppressed) weirs.
Ejemplo Resuelto
A 2 m wide suppressed weir with 0.3 m head, Cd = 0.62.
- sqrt(2 x 9.81) = sqrt(19.62) = 4.429
- H^(3/2) = 0.3^1.5 = 0.1643
- Q = (2/3) x 0.62 x 2 x 4.429 x 0.1643
- Q = 0.4133 x 4.429 x 0.1643 = 0.601 m^3/s = 601 L/s