onlinechannel17.php:   Calculation of critical flow in width constriction

Critical flow in width constriction

Formulas:

v1 = Q/(b1y1)
F1 = v1/(gy1)1/2
σ = 271/2 F1/(2 + F12)3/2
bc = σb1
q = Q/bc
yc = (q2/g)1/3
vc = q/yc
INPUT DATA:

Select:      

Discharge Q:        

Channel width b1:        

Flow depth y1:       

INTERMEDIATE CALCS:

Units selected:   

Grav. accel. [ g ]:   

Flow velocity v1:   

Froude number F1:   

σ:   

OUTPUT:

Constriction width bc:   

Unit-width discharge q:   

Constriction depth yc:   

Constriction velocity vc:   

Press button to
or recalculate

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