Fully coupled approach to modeling shallow water flow, sediment transport, and bed evolution in rivers

Shuangcai Li, Christopher J. Duffy

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

Our ability to predict complex environmental fluid flow and transport hinges on accurate and efficient simulations of multiple physical phenomenon operating simultaneously over a wide range of spatial and temporal scales, including overbank floods, coastal storm surge events, drying and wetting bed conditions, and simultaneous bed form evolution. This research implements a fully coupled strategy for solving shallow water hydrodynamics, sediment transport, and morphological bed evolution in rivers and floodplains (PIHM-Hydro) and applies the model to field and laboratory experiments that cover a wide range of spatial and temporal scales. The model uses a standard upwind finite volume method and Roe's approximate Riemann solver for unstructured grids. A multidimensional linear reconstruction and slope limiter are implemented, achieving second-order spatial accuracy. Model efficiency and stability are treated using an explicit-implicit method for temporal discretization with operator splitting. Laboratory-and field-scale experiments were compiled where coupled processes across a range of scales were observed and where higher-order spatial and temporal accuracy might be needed for accurate and efficient solutions. These experiments demonstrate the ability of the fully coupled strategy in capturing dynamics of field-scale flood waves and small-scale drying-wetting processes.

Original languageEnglish (US)
Article numberW03508
JournalWater Resources Research
Volume47
Issue number3
DOIs
StatePublished - Mar 15 2011

Fingerprint

sediment transport
water flow
shallow water
wetting
river
modeling
flood wave
finite volume method
physical phenomena
storm surge
bedform
fluid flow
floodplain
experiment
hydrodynamics
simulation
drying
laboratory
field experiment
method

All Science Journal Classification (ASJC) codes

  • Water Science and Technology

Cite this

@article{b023a55b5f3847529c8e66baa162c846,
title = "Fully coupled approach to modeling shallow water flow, sediment transport, and bed evolution in rivers",
abstract = "Our ability to predict complex environmental fluid flow and transport hinges on accurate and efficient simulations of multiple physical phenomenon operating simultaneously over a wide range of spatial and temporal scales, including overbank floods, coastal storm surge events, drying and wetting bed conditions, and simultaneous bed form evolution. This research implements a fully coupled strategy for solving shallow water hydrodynamics, sediment transport, and morphological bed evolution in rivers and floodplains (PIHM-Hydro) and applies the model to field and laboratory experiments that cover a wide range of spatial and temporal scales. The model uses a standard upwind finite volume method and Roe's approximate Riemann solver for unstructured grids. A multidimensional linear reconstruction and slope limiter are implemented, achieving second-order spatial accuracy. Model efficiency and stability are treated using an explicit-implicit method for temporal discretization with operator splitting. Laboratory-and field-scale experiments were compiled where coupled processes across a range of scales were observed and where higher-order spatial and temporal accuracy might be needed for accurate and efficient solutions. These experiments demonstrate the ability of the fully coupled strategy in capturing dynamics of field-scale flood waves and small-scale drying-wetting processes.",
author = "Shuangcai Li and Duffy, {Christopher J.}",
year = "2011",
month = "3",
day = "15",
doi = "10.1029/2010WR009751",
language = "English (US)",
volume = "47",
journal = "Water Resources Research",
issn = "0043-1397",
publisher = "American Geophysical Union",
number = "3",

}

Fully coupled approach to modeling shallow water flow, sediment transport, and bed evolution in rivers. / Li, Shuangcai; Duffy, Christopher J.

In: Water Resources Research, Vol. 47, No. 3, W03508, 15.03.2011.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Fully coupled approach to modeling shallow water flow, sediment transport, and bed evolution in rivers

AU - Li, Shuangcai

AU - Duffy, Christopher J.

PY - 2011/3/15

Y1 - 2011/3/15

N2 - Our ability to predict complex environmental fluid flow and transport hinges on accurate and efficient simulations of multiple physical phenomenon operating simultaneously over a wide range of spatial and temporal scales, including overbank floods, coastal storm surge events, drying and wetting bed conditions, and simultaneous bed form evolution. This research implements a fully coupled strategy for solving shallow water hydrodynamics, sediment transport, and morphological bed evolution in rivers and floodplains (PIHM-Hydro) and applies the model to field and laboratory experiments that cover a wide range of spatial and temporal scales. The model uses a standard upwind finite volume method and Roe's approximate Riemann solver for unstructured grids. A multidimensional linear reconstruction and slope limiter are implemented, achieving second-order spatial accuracy. Model efficiency and stability are treated using an explicit-implicit method for temporal discretization with operator splitting. Laboratory-and field-scale experiments were compiled where coupled processes across a range of scales were observed and where higher-order spatial and temporal accuracy might be needed for accurate and efficient solutions. These experiments demonstrate the ability of the fully coupled strategy in capturing dynamics of field-scale flood waves and small-scale drying-wetting processes.

AB - Our ability to predict complex environmental fluid flow and transport hinges on accurate and efficient simulations of multiple physical phenomenon operating simultaneously over a wide range of spatial and temporal scales, including overbank floods, coastal storm surge events, drying and wetting bed conditions, and simultaneous bed form evolution. This research implements a fully coupled strategy for solving shallow water hydrodynamics, sediment transport, and morphological bed evolution in rivers and floodplains (PIHM-Hydro) and applies the model to field and laboratory experiments that cover a wide range of spatial and temporal scales. The model uses a standard upwind finite volume method and Roe's approximate Riemann solver for unstructured grids. A multidimensional linear reconstruction and slope limiter are implemented, achieving second-order spatial accuracy. Model efficiency and stability are treated using an explicit-implicit method for temporal discretization with operator splitting. Laboratory-and field-scale experiments were compiled where coupled processes across a range of scales were observed and where higher-order spatial and temporal accuracy might be needed for accurate and efficient solutions. These experiments demonstrate the ability of the fully coupled strategy in capturing dynamics of field-scale flood waves and small-scale drying-wetting processes.

UR - http://www.scopus.com/inward/record.url?scp=79952472286&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79952472286&partnerID=8YFLogxK

U2 - 10.1029/2010WR009751

DO - 10.1029/2010WR009751

M3 - Article

AN - SCOPUS:79952472286

VL - 47

JO - Water Resources Research

JF - Water Resources Research

SN - 0043-1397

IS - 3

M1 - W03508

ER -