Abstract
A 2D depth-averaged hydrodynamic, sediment transport and bed morphology model named STREMR HySeD is presented. The depth-averaged sediment transport equations are derived from the 3D dilute, multiphase, flow equations and are incorporated into the hydrodynamic model STREMR. The hydrodynamic model includes a two-equation turbulence model and a correction for the mean flow due to secondary flows. The suspended sediment load can be subdivided into different size classes using the continuum (two-fluid) approach; however, only one bed sediment size is used herein. The validation of the model is presented by comparing the suspended sediment transport module against experimental measurements and analytical solutions for the case of equilibrium sediment-laden in a transition from a rigid bed to a porous bed where re-suspension of sediment is prevented. On the other hand, the bed-load sediment transport and bed evolution numerical results are compared against bed equilibrium experimental results for the case of a meander bend. A sensitivity analysis based on the correction for secondary flow on the mean flow including the effect of secondary flow on bed shear stresses direction as well as the downward acceleration effect due to gravity on transverse bed slopes is performed and discussed. In general, acceptable agreement is found when comparing the numerical results obtained with STREMR HySeD against experimental measurements and analytical solutions.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1443-1459 |
| Number of pages | 17 |
| Journal | Hydrological Processes |
| Volume | 22 |
| Issue number | 10 |
| DOIs | |
| State | Published - May 15 2008 |
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Keywords
- Bed evolution model
- Bed-load
- Depth-averaged model
- Finite volume method
- River morphodynamics
- Sediment transport
- Suspended load
ASJC Scopus subject areas
- Water Science and Technology
Cite this
2D stream hydrodynamic, sediment transport and bed morphology model for engineering applications. / Abad, Jorge D.; Buscaglia, Gustavo C.; Garcia, Marcelo Horacio.
In: Hydrological Processes, Vol. 22, No. 10, 15.05.2008, p. 1443-1459.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - 2D stream hydrodynamic, sediment transport and bed morphology model for engineering applications
AU - Abad, Jorge D.
AU - Buscaglia, Gustavo C.
AU - Garcia, Marcelo Horacio
PY - 2008/5/15
Y1 - 2008/5/15
N2 - A 2D depth-averaged hydrodynamic, sediment transport and bed morphology model named STREMR HySeD is presented. The depth-averaged sediment transport equations are derived from the 3D dilute, multiphase, flow equations and are incorporated into the hydrodynamic model STREMR. The hydrodynamic model includes a two-equation turbulence model and a correction for the mean flow due to secondary flows. The suspended sediment load can be subdivided into different size classes using the continuum (two-fluid) approach; however, only one bed sediment size is used herein. The validation of the model is presented by comparing the suspended sediment transport module against experimental measurements and analytical solutions for the case of equilibrium sediment-laden in a transition from a rigid bed to a porous bed where re-suspension of sediment is prevented. On the other hand, the bed-load sediment transport and bed evolution numerical results are compared against bed equilibrium experimental results for the case of a meander bend. A sensitivity analysis based on the correction for secondary flow on the mean flow including the effect of secondary flow on bed shear stresses direction as well as the downward acceleration effect due to gravity on transverse bed slopes is performed and discussed. In general, acceptable agreement is found when comparing the numerical results obtained with STREMR HySeD against experimental measurements and analytical solutions.
AB - A 2D depth-averaged hydrodynamic, sediment transport and bed morphology model named STREMR HySeD is presented. The depth-averaged sediment transport equations are derived from the 3D dilute, multiphase, flow equations and are incorporated into the hydrodynamic model STREMR. The hydrodynamic model includes a two-equation turbulence model and a correction for the mean flow due to secondary flows. The suspended sediment load can be subdivided into different size classes using the continuum (two-fluid) approach; however, only one bed sediment size is used herein. The validation of the model is presented by comparing the suspended sediment transport module against experimental measurements and analytical solutions for the case of equilibrium sediment-laden in a transition from a rigid bed to a porous bed where re-suspension of sediment is prevented. On the other hand, the bed-load sediment transport and bed evolution numerical results are compared against bed equilibrium experimental results for the case of a meander bend. A sensitivity analysis based on the correction for secondary flow on the mean flow including the effect of secondary flow on bed shear stresses direction as well as the downward acceleration effect due to gravity on transverse bed slopes is performed and discussed. In general, acceptable agreement is found when comparing the numerical results obtained with STREMR HySeD against experimental measurements and analytical solutions.
KW - Bed evolution model
KW - Bed-load
KW - Depth-averaged model
KW - Finite volume method
KW - River morphodynamics
KW - Sediment transport
KW - Suspended load
UR - http://www.scopus.com/inward/record.url?scp=44649163172&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=44649163172&partnerID=8YFLogxK
U2 - 10.1002/hyp.6697
DO - 10.1002/hyp.6697
M3 - Article
AN - SCOPUS:44649163172
VL - 22
SP - 1443
EP - 1459
JO - Hydrological Processes
JF - Hydrological Processes
SN - 0885-6087
IS - 10
ER -