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Calculate Froude Number for Any Channel:

Calculation:

Designer/Checker:

Input:

Metric Units

Channel flow (Q - cfs or cms)

Cross sectional area (A - sf or sm)

Top width of channel (B - ft or m)

Output:

Fr = (((Q^2)B)/((g(A^3)))^0.5 =

If Fr = 1 then flow is critical. Fr > 1 then flow is supercritical.

If Fr < 1 then flow is subcritical.