online_ackers_white:  Calculation of sediment discharge by the Ackers-White formula   

Formulas:


Q = V D B        dgr = d50 [ g (Ss - 1) / ν2 ] 1/3

u* = (g D S )1/2        n = 1 - 0.56 log (dgr)

A = [ 0.23 / dgr1/2 ] + 0.14        α = 10

Fgr = { u* n / [ g d50 (Ss - 1) ] 1/2 }  { V / [ 321/2 log (α D / d50) ] } 1 - n

m = (6.83 / dgr ) + 1.67        C = 10 2.79 log (dgr) - 0.98 [ log (dgr ) ]2 - 3.46

Ggr = C [ ( Fgr / A ) - 1 ] m        X = Ggr Ss d50 / [ D (u* / V ) n ]

G = γw Q X


SI Units (metric):   Hydraulic depth D in m; channel width B in m; mean velocity V in m/s; bottom slope So in m/m; mean diameter d50 in mm; temperature in degrees Celsius.

U.S. Customary Units:   Hydraulic depth D in ft; channel width B in ft; mean velocity V in fps; bottom slope So in ft/ft; mean diameter d50 in mm; temperature in degrees Fahrenheit.


INPUT DATA:  [Sample input file]

Select:      

Hydraulic depth D :          

Channel width B :            

Mean velocity V :             

Bottom slope So :            

Mean diameter d50 :        

Temperature T :               

Specific gravity Ss :         
[ Leave blank to choose default Ss = 2.65 ]

OUTPUT:

Sediment discharge Qs :     

Sediment discharge Qs :     


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  Your request was processed at  09:54:58 am on August 19th, 2017   [ 170819  09:54:58 ].


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