Sediment Transport - Bed Load
Description
Precision:
Input
Sediment density (kg m
-3
)
ρ
s
Grain diameter (m)
d
Fluid density (kg m
-3
)
ρ
Kinematic viscosity (m
2
s
-1
)
ν
Gravitational acceleration (m s
-2
)
g
Channel data (optional)
Hydraulic radius (m)
R
h
Channel slope
S
Velocity data (optional)
Average velocity (m s
-1
)
U
av
Channel depth (m)
h
Roughness length (m)
z
0
Von Karman constant
κ
Calculations
1
(Dimensionless) critical shear stress
τ
*
crit
Specify directly, or:
2
Bed shear stress (N m
-2
)
τ
b
Specify directly, or:
Bed-load model
Meyer-Peter-Muller
Einstein-Brown
Yalin
Van Rijn
Nielsen
3
Bed flux (m
2
s
-1
)
q
b
Dimensionless quantities
Diameter
d
*
Shear stress
τ
*
Bed flux
q
*