Small-scale laboratory dam-break waves on movable beds

Spinewine, Benoît; Zech, Yves

doi:10.1080/00221686.2007.9521834

Cited by 142 publications

(124 citation statements)

References 23 publications

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“…A thin steel gate, fixed in the center of flume, was used as a dam in the experiments. In the original experiments [43], the erosion was observed for two bed materials, uniform coarse sand and Polyvinyl Chloride (PVC) pellets. For brevity purposes, this study simulates the experiment with a sand bed, extending on both sides of the dam.…”

Section: Dam-break Over Sand Bedmentioning

confidence: 99%

“…Experimental studies for sand bed evolution under dam-break waves were conducted at the Civil Engineering Department of Universite Catholique de Louvain (UCL), Belgium [43]. The experimental results were later validated by numerical simulations in references [8,22,44,45] …”

Section: Dam-break Over Sand Bedmentioning

confidence: 99%

“…The dam was removed instantaneously at t = 0, and the results were obtained for the four water surface and bed profiles. Model results were compared to the experimental measurements of Spinewine and Zech (2007) and to the numerical scheme without the modification introduced in Equations (31) and (32). pellets.…”

Section: Dam-break Over Sand Bedmentioning

confidence: 99%

See 2 more Smart Citations

Bed Evolution under Rapidly Varying Flows by a New Method for Wave Speed Estimation

Rehman

Cho

2016

Water

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This paper proposes a sediment-transport model based on coupled Saint-Venant and Exner equations. A finite volume method of Godunov type with predictor-corrector steps is used to solve a set of coupled equations. An efficient combination of approximate Riemann solvers is proposed to compute fluxes associated with sediment-laden flow. In addition, a new method is proposed for computing the water depth and velocity values along the shear wave. This method ensures smooth solutions, even for flows with high discontinuities, and on domains with highly distorted grids. The numerical model is tested for channel aggradation on a sloping bottom, dam-break cases at flume-scale and reach-scale with flat bottom configurations and varying downstream water depths. The proposed model is tested for predicting the position of hydraulic jump, wave front propagation, and for predicting magnitude of bed erosion. The comparison between results based on the proposed scheme and analytical, experimental, and published numerical results shows good agreement. Sensitivity analysis shows that the model is computationally efficient and virtually independent of mesh refinement.

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Section: Dam-break Over Sand Bedmentioning

confidence: 99%

Section: Dam-break Over Sand Bedmentioning

confidence: 99%

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Bed Evolution under Rapidly Varying Flows by a New Method for Wave Speed Estimation

Rehman

Cho

2016

Water

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“…Based on an understanding of the physical process of flow-sediment process (Guan, et al, 2014, Spinewine andZech, 2007), a layer-based concept divides the whole flow region into an active bed layer; a sheet flow layer and an upper suspension layer (see Fig.1). Following the shallow water theory-based non-capacity model, the model system comprises a combination of the following modules:…”

Section: Framework Of a Multi-mode Morphodynamic Modelmentioning

confidence: 99%

Multimode Morphodynamic Model for Sediment-Laden Flows and Geomorphic Impacts

2015

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“…Several researchers have studied the flood wave caused due to the dam-break either experimentally or numerically. The experimental investigations can be obtained from the literature [12][13][14][15]. The successful representation of dam-break flow using numerical simulation have been reported by [16][17][18][19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Modeling of Shallow-Water Equations by Using Implicit Higher-Order Compact Scheme with Application to Dam-Break Problem

Bagheri¹,

Das²

2013

J Appl Computat Math

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The paper deals with the unsteady two-dimensional (2D) non-linear shallow-water equations (SWE) in conservation-law form to capture the fluid flow in transition. Numerical simulations of dam-break flood wave in channel transitions have been performed for inviscid and incompressible flow by using two new implicit higher-order compact (HOC) schemes. The algorithm is second order accurate in time and fourth order accurate in space, on the nine-point stencil using third order non-centered difference at the wall boundaries. To solve the algebraic system, bi-conjugate gradient stabilized method (BiCGStab) with preconditioning has been employed. Although, both the schemes are able to capture both transient and steady state solution of shallow water equations, the scheme expressed in conservative law form is unconditionally stable. The model results have been validated for dam-break problem and compared with the experimental data for dry and wet bed conditions. The model results are found to be in good agreement with the experimental observations. The proposed scheme is useful to solve to capture flow transition with minimal number of nodal points, particularly for hyperbolic system.

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Small-scale laboratory dam-break waves on movable beds

Cited by 142 publications

References 23 publications

Bed Evolution under Rapidly Varying Flows by a New Method for Wave Speed Estimation

Bed Evolution under Rapidly Varying Flows by a New Method for Wave Speed Estimation

Multimode Morphodynamic Model for Sediment-Laden Flows and Geomorphic Impacts

Modeling of Shallow-Water Equations by Using Implicit Higher-Order Compact Scheme with Application to Dam-Break Problem

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