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

  Your request was processed at  06:03:14 pm on August 28th, 2008   [ 080828  18:03:14 ].

Thank you for running onlinechannel17.php.   Please call again.   [060209]

Count 

online calc
normal depth critical depth discharge in culvert critical slope sequent depth HJ energy loss HJ
discharge sluice discharge weir discharge channel initial sequent HJ critical constriction efficiency HJ
M1 wsprofile M2 wsprofile M3 wsprofile S1 wsprofile S2 wsprofile S3 wsprofile
C1 wsprofile H2 wsprofile A2 wsprofile C3 wsprofile H3 wsprofile A3 wsprofile
tractive force ogee spillway Hazen-Williams
creager rational slope-area linear reservoir storage indication 1 storage indication 2
Muskingum Muskingum-Cunge time-area Clark UH cascade of linear reservoirs
Blaney-Criddle Penman Penman-Monteith Thornthwaite Priestley-Taylor
Gumbel Gumbel 2 Log Pearson Log Pearson 2 TR-55 graphical convolution
S-hydrograph curve number time of concentration
hyperbolic regression one-predictor linear one-predictor nonlinear two-predictor linear two-predictor nonlinear
USLE Dendy-Bolton Shields Duboys Colby reservoir design life