


108
Rodney J. Sobey
Lateral structure of uniform flow
Journal of Hydroinformatics
06.2
2004
integrated) friction factor f. Channel bathymetry is
dZ1
2
Z
specified as (yi,hi) observation pairs. A twostage numeri
dy
e
cal algorithm is formulated to solve for the crosssection
2
Z1
dZ2
g h Dh S0 gn 2
area A, the left yL and right yR bank locations, the qx(y)
h Dh 7 3
dy
profile, the horizontal eddy viscosity e and the depth
dZ3
Z1
dy
Application of the algorithm to a rectangular channel
2
dZ4
1
Z
and a natural channel are given. The predictions are
(32)
h Dh 7 3
dy
shown to be physically plausible.
Algorithm variations for alternative channel friction
and Equation (25) becomes
models are given.
f1(z,e,n9) = 0 = Z1(yR)
f2(z,e,n9) = 0 = Z3(yR)
ACKNOWLEDGEMENTS
f3(z,e,n9) = 0 = gAS0 + (Z2(yR)  z)  gn92Z4(yR).
(33)
The research described and the results presented herein,
The details are otherwise identical.
unless otherwise noted, were obtained from research
funded through the Scour Holes at Inlet Structures work
unit of the Coastal Inlets Research Program at the US
Army Engineer Research and Development Center,
Coastal and Hydraulics Laboratory (CHL). Permission
was granted by Headquarters, US Army Corps of
CONCLUSIONS
Engineers, to publish this information.
An analysis of the lateral structure at uniform flow in a
channel has been based on the depthintegrated long wave
equations. At uniform flow, it is shown that the cross
stream depthintegrated flow qy is identically zero and that
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