Bed Topography and Sediment Sorting in Channel Bend with Unsteady Flow

Yen, Chin-Lien; Lee, Kwan Tun

doi:10.1061/(asce)0733-9429(1995)121:8(591)

Cited by 80 publications

(67 citation statements)

References 10 publications

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“…For the calculation of the bed shear driven resultant bed load, the empirical formulas by van Rijn [1984a] were used. Among others, the model was validated on laboratory experiments in river bends of Odgaard and Bergs [1988] and Yen and Lee [1995]. The model set up for validating the experiments by Yen and Lee [1995] was simplified by assuming the uniform instead of a graded sediment size distribution.…”

Section: Introductionmentioning

confidence: 99%

“…Among others, the model was validated on laboratory experiments in river bends of Odgaard and Bergs [1988] and Yen and Lee [1995]. The model set up for validating the experiments by Yen and Lee [1995] was simplified by assuming the uniform instead of a graded sediment size distribution. Thus, relevant observed sorting processes were neglected by the 2-D model.…”

Section: Introductionmentioning

confidence: 99%

“…The sediment transport formulas introduced by Wu et al [2000b] were implemented. By calibrating two parameters of the introduced helical flow intensity model, the experiments by Yen and Lee [1995] were used for validation. Here, eight sediment size fractions were chosen to represent the nonuniform sediment mixture, so that the sediment sorting processes were computed by the model.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Three‐dimensional CFD modeling of morphological bed changes in the Danube River

Fischer-Antze¹,

Olsen

Gutknecht

2008

Water Resources Research

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[1] The bed changes in a section of the river Danube were computed using a 3-D computational fluid dynamics model. A time series of discharges during the flood in 2002 was used. The results compared reasonably well with regular bed level surveys before and after the flood. The Danube River section was 6 km long and located between Vienna and the Austrian-Slovakian border. The fully three-dimensional numerical model solved the Navier-Stokes equations using the k-epsilon turbulence closure. Nonuniform sediment transport was computed using the formulas of Wu et al. (2000b), considering hidingexposure algorithms. Both bed deformation and sorting processes were calculated. A number of parameter sensitivity tests were carried out on roughness values, parameters in the sediment transport capacity formula, parameters in the hiding-exposure formulas, critical Shields number, and variations in the formulas for the effect of a sloping bed. Additionally, the sediment inflow to the section was varied together with investigations of physical parameters such as vegetation and groyne structures. The results were most sensitive to the Shields number for critical movement of the sediments. An error analysis was performed to give a quantitative assessment of the parameter sensitivity tests.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Three‐dimensional CFD modeling of morphological bed changes in the Danube River

Fischer-Antze¹,

Olsen

Gutknecht

2008

Water Resources Research

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“…The numerical model has been tested on laboratory experience, performed by van Rijn [21] and Yen and Lee [22] in different hydrodynamic conditions. A comparative analysis among bed load formulae and suspended load approaches is conducted, to check their reliability.…”

Section: Validation Testsmentioning

confidence: 99%

Morphodynamic Model Suitable for River Flow and Wave-Current Interaction

Bosa

Petti

Lubrano

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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“…As a result, the previous achievements in the study of uniform sediment transport can not be directly applied on the nonuniform sediment transport, and employing the non-uniformity of sediment in the simulation of sediment transport is needed. [8][9][10][11][12][13][14][15][16][17][18][19][20]. To a certain extent, these meaningful studies have revealed the mechanics of nonuniform sediment transport.…”

Section: Introductionmentioning

confidence: 99%

Automatic Surface Size Distribution Observation of Graded Sand Bed Based on Digital Image Analysis

Li¹,

Wang²,

Jin³

et al. 2017

Proceedings of the 2017 2nd International Conference on Control, Automation and Artificial Intelligence (CAAI 2017)

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Abstract-Traditional method commonly used in bulk sampling and sieve analyses is inevitablely involved the bed surface excavation and destroy the original bed size distribution. In this work, an automatic surface size distribution observation method based on digital image analysis without involving the bed surface excavation is proposed and the validity of this method is tested by an experimental case. The surface size distribution results from this method are compared with the traditional volume-by-weight method, and it is shown that a conservative estimate of the error in measuring bed surface composition for this method is considerably smaller.

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Bed Topography and Sediment Sorting in Channel Bend with Unsteady Flow

Cited by 80 publications

References 10 publications

Three‐dimensional CFD modeling of morphological bed changes in the Danube River

Three‐dimensional CFD modeling of morphological bed changes in the Danube River

Morphodynamic Model Suitable for River Flow and Wave-Current Interaction

Automatic Surface Size Distribution Observation of Graded Sand Bed Based on Digital Image Analysis

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