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:

 SI units (metric) U.S. Customary units

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  06:52:46 pm on September 27th, 2021   [ 210927  18:52:46 ].

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