A distributed surface flow model for watersheds with large water bodies and channel loops

Luo, Qiang

doi:10.1016/j.jhydrol.2007.01.029

Cited by 19 publications

(19 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Then, the implicit scheme is not reliable to simulate transient flows with sharp advance profiles. These kinds of limitations are common to other implicit schemes used by other authors (Wasantha Lal, 1998;VanderKwaak, 1999;Luo, 2007). The extension of the implicit scheme to 2D flows taking into account the entropy correction on rectangular grids is straightforward.…”

Section: Appendix a Implicit Model Based On The Thomas Algorithmmentioning

confidence: 87%

Diffusive-Wave Based Hydrologic-Hydraulic Model with Sediment Transport. I: Model Development

et al. 2012

View full text Add to dashboard Cite

show abstract

Section: Appendix a Implicit Model Based On The Thomas Algorithmmentioning

confidence: 87%

Diffusive-Wave Based Hydrologic-Hydraulic Model with Sediment Transport. I: Model Development

et al. 2012

View full text Add to dashboard Cite

show abstract

“…One way of avoiding this problem is to make a local change on the roughness coefficient in the zones where a depression is eliminated. Other authors use models that couple 2D models with a channel network modelled by means of a 1D model offering an outlet to the 2D flow (Luo, 2007).…”

Section: Data Treatmentmentioning

confidence: 99%

“…Traditionally, different formulae directly extended from the 1D-Manning formula have been used to define the 2D energy slopes (Hunter et al, 2005;Luo, 2007;Fewtrell et al, 2007): Figure 7 shows the radial profile at t=80s when those formulae are used instead of (2.8) in the companion paper to develop the numerical model. Figure 7 shows that, when using the friction slope directly extended from the 1D-Manning formula the profile results does not reproduce the exact solution in a 2D case when radial symmetry is expected.…”

mentioning

confidence: 99%

Diffusive-Wave Based Hydrologic-Hydraulic Model with Sediment Transport. II: Validation and Practical Application

et al. 2012

View full text Add to dashboard Cite

The development of a distributed 2D hydrologic-hydraulic simulation model was presented in a companion paper. The simulation model combined overland flow (a suitable formulation that behaves as the diffusive wave model for zero or adverse slope cells and as the kinematic wave otherwise), Hillslope sediment transport and groundwater flow apart from the water exchange mechanisms between zones. Particular attention was paid to the upwind discretization of the surface flow equations. In this paper, the proposed model is validated using 4 test cases with exact solution, one academic test case and two laboratory test cases.The model adequately reproduced front advance over dry beds of any slope and water table evolution in simple cases. As practical application of the model, the simulation of real events in two experimental basins is also presented. The work is focused on the influence of the choice of the empirical parameters on the model results concerning solid and liquid discharges. Also, due to the lack of information referring to the boundary and initial conditions of the groundwater flow in real basins it is difficult to evaluate the accuracy of the complete model.

show abstract

“…Each grid cell in the watershed possesses its own hydraulic parameter and state variables, such as roughness coefficient, land use, elevation and water depth. An example of a distributed water balance models is the Luo-Tamai model, a physically based computer model, which was applied to the Kanto region of Japan (Luo 2000(Luo , 2007. The Luo-Tamai model is a unified surface-flow routing system in which both the overland flow and channel flow were considered under the same physical framework.…”

Section: Introductionmentioning

confidence: 99%

Flow modeling and analysis of compound channel in river network with complex floodplains and groynes

Hassan

Tanaka

Tamai

2010

Journal of Hydroinformatics

View full text Add to dashboard Cite

Presented here are flow simulations of a network of natural rivers flanked by one or two large and complex floodplains with impermeable groynes and bridge embankments using one-and quasi-two-dimensional dynamic flow models. The effects of the large floodplain storage capacity, momentum transfer interaction and apparent shear stress at the vertical interface between the main channel and floodplain on the flow-simulated discharge and water depth values could be well explained. The two models were tested and validated in the Arakawa River basin, Kanto Region, Japan. The simulated results show that the large floodplain storage capacity greatly affected the flow discharge and water depth results and cannot be neglected. The quasitwo-dimensional river flow model was used in a flow simulation of a compound channel with complex floodplains with groynes and gave more acceptable results. In the simulated case, the average reduction in flood discharge using floodplain groynes was about 7-15%. Thus, floodplain groynes can be effective for flood protection and attenuation.

show abstract

A distributed surface flow model for watersheds with large water bodies and channel loops

Cited by 19 publications

References 21 publications

Diffusive-Wave Based Hydrologic-Hydraulic Model with Sediment Transport. I: Model Development

Diffusive-Wave Based Hydrologic-Hydraulic Model with Sediment Transport. I: Model Development

Diffusive-Wave Based Hydrologic-Hydraulic Model with Sediment Transport. II: Validation and Practical Application

Flow modeling and analysis of compound channel in river network with complex floodplains and groynes

Contact Info

Product

Resources

About