I/I. Sediment Transport
63
2.4.1
Low Concentrations
(c < 0.001)
Hindered settling effects and turbulence damping effects can be neglected.
Integration of eq. (6) yields "
c
e_a (z/h)(z_.)
(14)
constant oq:
C a
I l~z2 z
C
a
linear el:
-- =
(15)
C a
(Z/
va a o, c f
a)Z
c a
d Z a
(16)
for parabolic-constant ~:f:
.)z
-- =
- < o5
(17)
c a
d- a
for d z
c( _f
z
- -
e -4Z(z/d-0"5) for -- _> 0.5
c a
f
in which :
C
Ca
d
Z = Ws/(13Ku, o)
Ws
-- concentration at height z above the mean bed
= reference concentration at height z = a above bed
= water depth
= suspension number
- fall velocity in clear water