]>
2023-01-29T16:12:32-07:00
Model:DredgeSlotBW
3002
en
More will be filled out soon (10/18/2010)
0
Urbana
1
No but possible
Yes
No but possible
Single Processor
United States
--
https://csdms.colorado.edu/pub/models/doi-source-code/stm-10.1594.IEDA.100182-1.0.tar.gz
1.0
10.1594/IEDA/100112
--
--
--
--
--
--
--
As is, no updates are provided
2020
No
1991
2011
This program calculates the 1D bed evolution of a sand-bed river after installation of a dredge slot. The calculation begins with the assumption of a prevailing mobile-bed normal flow equilibrium before installation of the dredge slot. The flow depth H, volume bedload transport rate per unit width qb and volume suspended transport rate per unit width qs at normal flow are computed based on input values of discharge Qww, channel width B, bed material sizes D50 and D90, sediment submerged specific gravity Rr and bed slope S.
The sediment is assumed to be sufficiently uniform so that D50 and D90 are unchanging in space and time. The input parameter Inter specifies the fraction of any year for which flood flow prevails. At other times of the year the river is assumed to be morphologically dormant.
The reach is assumed to have length L. The dredge slot is excavated at time t = 0, and then allowed to fill in time with no subsequent excavation. The depth of initial excavation below the bottom of the bed prevailing at normal equilibrium is an input variable with the name Hslot. The dredge slot extends from an upstream point equal to ru*L to a downstream point rd*Hslot, where ru and rd are user-input values.
The porosity lamp of the sediment deposit is a user-input parameter.
The bedload transport relation used in the calculation is that of Ashida and Michiue (1972). The formulation for entrainment of sediment into suspension is that of Wright and Parker (2004). The formulation for flow resistance is that of Wright and Parker (2004). The flow stratification correction of Wright-Parker is not implemented here for simplicity. A quasi-equilibrium formulation is used to computed the transport rate of suspended sediment from the entrainment rate.
A backwater calculation is used to compute the flow. The water surface elevation at the downstream end of the reach is held constant at the value associated with normal flow equilibrium.
Iteration is required to compute: a) the flow depth prevailing at normal flow; b) the friction slope and depth prevailing at normal flow, b) the friction slope and depth associated with skin friction associated with skin friction from any given value of depth, and b) the minimum Shields number below which form drag is taken to vanish.
Gary
University of Illinois at Urbana-Champaign
Parker
0
No
--
Terrestrial
Hydrology
As code
bed evolution
fluvial morphodynamics
Tool
http://hydrolab.illinois.edu/people/parkerg/morphodynamics_e-book.htm
e-book
calculator
hydrographs
normal flow
flow
dredge slot
normal flow equilibrium
program calculates
normal
depth
wright and parker
flow depth
bed evolution
bed
mobile-bed normal flow
dredge
sediment
flow depth prevailing
fluvial morphodynamics
dredgeslotbw
1
E-book: calculator for aggradation and degradation of sediment mixtures in gravel-bed streams subject to cyclic hydrographs.
217 244-5159
false
205 North Mathews Ave
61801
false
Other
--
C
--
Through CSDMS repository
https://github.com/csdms-contrib/stm
1D
Watershed-Scale
1990
Illinois
Linux
Mac OS
Windows
Model developer
false
2010-10-19T18:27:09Z
2455489.2688542
2020-09-17T02:17:36Z
2459109.5955556
DredgeSlotBW
3002
0
plainlist
1
[[:Model:DredgeSlotBW]]
DredgeSlotBW# QUERYb5c94fbb19191d36d176563adcef6c98
3002
1
plainlist
5
[[User:+]] [[First name member::Gary]] [[Last name member::Parker]]
DredgeSlotBW# QUERYf0236f9ae43ebdf7231460c9ab3663b4
3002
1
ul
5
[[Model:+]] [[First name::Gary]] [[Last name::Parker]]
DredgeSlotBW# QUERY83072d5fae25d5334ccb729d47fecdfa
3002
[2,"smw_nofloat","--"]
DredgeSlotBW# ERR832e19663f926fa58b1c2c38ccac6efd