Development of a Two-Dimensional Hybrid Sediment-Transport Model
This paper presents the development of a two-dimensional hydrodynamic sediment transport model using the finite volume method based on a collocated unstructured hybrid-mesh system consisting of triangular and quadrilateral cells. The model is a single-phase nonequilibrium sediment-transport model fo...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-04-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/8/4940 |
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| author | Yaoxin Zhang Mohammad Al-Hamdan Daniel Wren |
| author_facet | Yaoxin Zhang Mohammad Al-Hamdan Daniel Wren |
| author_sort | Yaoxin Zhang |
| collection | DOAJ |
| description | This paper presents the development of a two-dimensional hydrodynamic sediment transport model using the finite volume method based on a collocated unstructured hybrid-mesh system consisting of triangular and quadrilateral cells. The model is a single-phase nonequilibrium sediment-transport model for nonuniform and noncohesive sediments in unsteady turbulent flows that considers multiple sediment-transport processes such as deposition, erosion, transport, and bed sorting. This model features a hybrid unstructured mesh system for easy mesh generation in complex domains. To avoid interpolation from vertices in conventional unstructured models, this model adopted a second-order accurate edge-gradient evaluation method to consider the mesh irregularities based on Taylor’s series expansion. In addition, the multipoint momentum interpolation corrections were integrated to avoid possible nonphysical oscillations during the wetting-and-drying process, common in unsteady sediment transport problems, to ensure both numerical stability and numerical accuracy. The developed sediment transport model was validated by a benchmark degradation case for the erosion process with armoring effects, a benchmark aggradation case for the deposition process, and a naturally meandering river for long-term unsteady sediment-transport processes. Finally, the model was successfully applied to simulate sediment transport in a reservoir that was significantly affected by typhoon events. |
| first_indexed | 2024-03-11T05:16:40Z |
| format | Article |
| id | doaj.art-22cccb72a77242a39ef0d85258e5bb41 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T05:16:40Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-22cccb72a77242a39ef0d85258e5bb412023-11-17T18:11:26ZengMDPI AGApplied Sciences2076-34172023-04-01138494010.3390/app13084940Development of a Two-Dimensional Hybrid Sediment-Transport ModelYaoxin Zhang0Mohammad Al-Hamdan1Daniel Wren2National Center for Computational Hydroscience and Engineering, University of Mississippi, Oxford, MS 38655, USANational Center for Computational Hydroscience and Engineering, University of Mississippi, Oxford, MS 38655, USANational Sedimentation Laboratory (NSL), USDA Agricultural Research Service (ARS), Oxford, MS 38655, USAThis paper presents the development of a two-dimensional hydrodynamic sediment transport model using the finite volume method based on a collocated unstructured hybrid-mesh system consisting of triangular and quadrilateral cells. The model is a single-phase nonequilibrium sediment-transport model for nonuniform and noncohesive sediments in unsteady turbulent flows that considers multiple sediment-transport processes such as deposition, erosion, transport, and bed sorting. This model features a hybrid unstructured mesh system for easy mesh generation in complex domains. To avoid interpolation from vertices in conventional unstructured models, this model adopted a second-order accurate edge-gradient evaluation method to consider the mesh irregularities based on Taylor’s series expansion. In addition, the multipoint momentum interpolation corrections were integrated to avoid possible nonphysical oscillations during the wetting-and-drying process, common in unsteady sediment transport problems, to ensure both numerical stability and numerical accuracy. The developed sediment transport model was validated by a benchmark degradation case for the erosion process with armoring effects, a benchmark aggradation case for the deposition process, and a naturally meandering river for long-term unsteady sediment-transport processes. Finally, the model was successfully applied to simulate sediment transport in a reservoir that was significantly affected by typhoon events.https://www.mdpi.com/2076-3417/13/8/4940depositionerosionunsteadynonequilibrium |
| spellingShingle | Yaoxin Zhang Mohammad Al-Hamdan Daniel Wren Development of a Two-Dimensional Hybrid Sediment-Transport Model Applied Sciences deposition erosion unsteady nonequilibrium |
| title | Development of a Two-Dimensional Hybrid Sediment-Transport Model |
| title_full | Development of a Two-Dimensional Hybrid Sediment-Transport Model |
| title_fullStr | Development of a Two-Dimensional Hybrid Sediment-Transport Model |
| title_full_unstemmed | Development of a Two-Dimensional Hybrid Sediment-Transport Model |
| title_short | Development of a Two-Dimensional Hybrid Sediment-Transport Model |
| title_sort | development of a two dimensional hybrid sediment transport model |
| topic | deposition erosion unsteady nonequilibrium |
| url | https://www.mdpi.com/2076-3417/13/8/4940 |
| work_keys_str_mv | AT yaoxinzhang developmentofatwodimensionalhybridsedimenttransportmodel AT mohammadalhamdan developmentofatwodimensionalhybridsedimenttransportmodel AT danielwren developmentofatwodimensionalhybridsedimenttransportmodel |