Calcolatrice Flusso su Stramazzo Gratuita

Calcola la portata su uno stramazzo rettangolare.

m
m

Flow Discharge (Q)

0.6017 m^3/s

Flow Rate601.7 L/s

Flow Discharge (Q) vs Discharge Coefficient (Cd)

Vedi formula →

Formula

## 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.

Esempio Risolto

A 2 m wide suppressed weir with 0.3 m head, Cd = 0.62.

  1. 01sqrt(2 x 9.81) = sqrt(19.62) = 4.429
  2. 02H^(3/2) = 0.3^1.5 = 0.1643
  3. 03Q = (2/3) x 0.62 x 2 x 4.429 x 0.1643
  4. 04Q = 0.4133 x 4.429 x 0.1643 = 0.601 m^3/s = 601 L/s