onlinechannel16.php:   Calculation of initial and sequent depths in a hydraulic jump

Initial [y1] and sequent {y2] depths in a hydraulic jump
Formulas:

Assume F1 = 2 and confirm, or iterate.
y2/y1 = (1/2) [(1 + 8F12)1/2 - 1]
y1 = 4 ΔE (y2/y1) / [(y2/y1) - 1]3
v1 = q/y1
F1 = v1/(gy1)1/2
INPUT DATA:

Select:   

Energy loss ΔE:  

Unit-width discharge q: 

INTERMEDIATE CALCS:

Units selected:   

Grav. acceleration [ g ]:   

Flow velocity v1:   

Froude number F1:   

OUTPUT:

Flow depth y1:   

Flow depth y2:   

Flow velocity v2:   

Froude number F2:   

Press button to
or recalculate

  Your request was processed at  03:40:56 am on January 20th, 2026   [ 260120  03:40:56 ].

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