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