2D Numerical Model of Sediment Transport Under Dam-break Flow Using Finite Element

2021 ◽  
Vol 11 (6) ◽  
pp. 2476
Author(s):  
Qalbi Hafiyyan ◽  
Dhemi Harlan ◽  
Mohammad Bagus Adityawan ◽  
Dantje Kardana Natakusumah ◽  
Ikha Magdalena
Keyword(s):  
Finite Element ◽  
Sediment Transport ◽  
Numerical Model ◽  
Dam Break ◽  
Dam Break Flow ◽  
2D Numerical Model

scholarly journals NUMERICAL AND EXPERIMENTAL STUDY OF DAM-BREAK FLOOD PROPAGATION AND ITS IMPLICATION TO SEDIMENT EROSION

2012 ◽  
Vol 1 (33) ◽  
pp. 7
Author(s):  
Hung-Chu Hsu ◽  
A. Torres-Freyermuth ◽  
Tian-Jian Hsu ◽  
Hwung-Hweng Hwung
Keyword(s):  
Free Surface ◽  
Sediment Transport ◽  
Numerical Model ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Transport Processes ◽  
Dam Break ◽  
Navier Stokes ◽  
Suspended Sediment Transport ◽  
Initial Stage

Regarding the hydrodynamics, within the past two decades it has become popular in numerical modeling of free-surface flow to adopt a Reynolds-averaged Navier-Stokes approach, where the volume of fluid (VOF) method is utilized to track the evolution of free-surface. However, this robust numerical model has not been widely applied to the study of sediment transport processes. In this study, we shall extend the numerical model to simulate suspended sediment transport and study the erosion pattern during the initial stage of the dam break flow. We also conducted a series of experiments in a horizontal channel of rectangular section and recorded the snap shots of surface profiles of a dam- break wave during the initial stage of dam-break. Measured data is utilized here to study the hydrodynamics and to validate the numerical model.

A NUMERICAL STUDY OF DAM-BREAK FLOW AND SEDIMENT TRANSPORT FROM A QUAKE LAKE

2011 ◽  
Vol 05 (05) ◽  
pp. 401-428 ◽  
Author(s):  
PENGZHI LIN ◽  
YINNA WU ◽  
JUNLI BAI ◽  
QUANHONG LIN
Keyword(s):  
Sediment Transport ◽  
Shallow Water ◽  
High Speed ◽  
Numerical Study ◽  
Shallow Water Equation ◽  
Equation Model ◽  
Dam Break ◽  
Bed Morphology ◽  
Dam Break Flow ◽  
Quake Lake

Dam-break flows are simulated numerically by a two-dimensional shallow-water-equation model that combines a hydrodynamic module and a sediment transport module. The model is verified by available analytical solutions and experimental data. It is demonstrated that the model is a reliable tool for the simulation of various transient shallow water flows and the associated sediment transport and bed morphology on complex topography. The validated model is then applied to investigate the potential dam-break flows from Tangjiashan Quake Lake resulting from Wenchuan Earthquake in 2008. The dam-break flow evolution is simulated by using the model in order to provide the flooding patterns (e.g., arrival time and flood height) downstream. Furthermore, the sediment transport and bed morphology simulation is performed locally to study the bed variation under the high-speed dam-break flow.

Comparison of capacity and non-capacity sediment transport models for dam break flow over movable bed

2016 ◽  
pp. 522-527
Author(s):  
J. Zhao ◽  
I. Özgen ◽  
R. Hinkelmann ◽  
F. Simons ◽  
D. Liang
Keyword(s):  
Sediment Transport ◽  
Dam Break ◽  
Transport Models ◽  
Dam Break Flow ◽  
Movable Bed

scholarly journals Comparison of depth-averaged concentration and bed load flux sediment transport models of dam-break flow

2017 ◽  
Vol 10 (4) ◽  
pp. 287-294 ◽  
Author(s):  
Jia-heng Zhao ◽  
Ilhan Özgen ◽  
Dong-fang Liang ◽  
Reinhard Hinkelmann
Keyword(s):  
Sediment Transport ◽  
Dam Break ◽  
Bed Load ◽  
Transport Models ◽  
Dam Break Flow

scholarly journals Interactions Study of Hydrodynamic-Morphology-Vegetation for Dam-Break Flows

2016 ◽  
Vol 2016 ◽  
pp. 1-12
Author(s):  
Mingliang Zhang ◽  
Yuanyuan Xu ◽  
Jin Li ◽  
Huiting Qiao ◽  
Hongxing Zhang
Keyword(s):  
Numerical Model ◽  
Morphological Changes ◽  
Flow Region ◽  
Dam Break ◽  
Plant Distribution ◽  
Computational Domain ◽  
Dam Break Flow ◽  
Volume Method ◽  
Two Sides ◽  
Morphology Characteristics

This study models a dam-break flow over a bed by using a depth-averaged numerical model based on finite-volume method and computes the dam-break flow and bed morphology characteristics. The generalized shallow water equations considering the sediment transport and bed change on dam-break flow are adopted in the numerical model, and the vegetation effects on the flow and morphological changes are considered. The model is verified against three cases from the laboratory and field data documented in the literature. The numerical results are consistent with the measured results, which show that the model could accurately simulate the evolution of the dam-break flows and the morphology evolution of bed within a computational domain with complex plant distribution. The results show that the riparian vegetation in the waterway narrows the channel and reduces the conveyance capacity of river. The flood flow is diverted away from the vegetation community toward two sides and forms a weak flow region behind the vegetation domain. The resistance of plants markedly reduces the flow velocity, which directly alters the fluvial processes and influences the waterway morphology.

High- Resolution Numerical Model for Dam-Break Flow in an L-Shaped Channel

2012 ◽  
Vol 482-484 ◽  
pp. 679-683
Author(s):  
Y. L Liu ◽  
W.L Wei
Keyword(s):  
Numerical Simulation ◽  
High Resolution ◽  
Numerical Model ◽  
Total Variation ◽  
Channel Flow ◽  
Water Surface ◽  
Dam Break ◽  
Order Accuracy ◽  
Variation Diminishing ◽  
Dam Break Flow

A high-resolution numerical model for dam-break flow in an L-shaped channel was presented based on using the two-step finite-volume component-wise TVD (total variation diminishing) scheme, by which second-order accuracy in both time and space is achieved. Numerical simulation for open L-shaped channel flow was implemented, and velocity and water surface were obtained.

scholarly journals A Well-Balanced and Fully Coupled Noncapacity Model for Dam-Break Flooding

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
Zhiyuan Yue ◽  
Huaihan Liu ◽  
Youwei Li ◽  
Peng Hu ◽  
Yanyan Zhang
Keyword(s):  
Sediment Transport ◽  
Momentum Conservation ◽  
Dam Break ◽  
Governing Equations ◽  
Complex Flow ◽  
Flow Phenomena ◽  
Dam Break Flow ◽  
Flow And Sediment Transport ◽  
Volume Method ◽  
Fully Coupled

The last two decades have seen great progress in mathematical modeling of fluvial processes and flooding in terms of either approximation of the physical processes or dealing with the numerical difficulties. Yet attention to simultaneously taking advancements of both aspects is rarely paid. Here a well-balanced and fully coupled noncapacity model is presented of dam-break flooding over erodible beds. The governing equations are based on the complete mass and momentum conservation laws, implying fully coupled interactions between the dam-break flow and sediment transport. A well-balanced Godunov-type finite volume method is used to solve the governing equations, facilitating satisfactory representation of the complex flow phenomena. The well-balanced property is attained by using the divergence form of matrix related to the static force for the bottom slope source term. Existing classical tests, including idealized dam-break flooding over irregular topography and experimental dam-break flooding with/without sediment transport, are numerically simulated, showing a satisfactory quantitative performance of this model.

scholarly journals A Non-Equilibrium Sediment Transport Model for Dam Break Flow over Moveable Bed Based on Non-Uniform Rectangular Mesh

Water ◽  
2018 ◽  
Vol 10 (5) ◽  
pp. 616 ◽  
Author(s):  
Gangfeng Wu ◽  
Zhehao Yang ◽  
Kefeng Zhang ◽  
Ping Dong ◽  
Ying-Tien Lin
Keyword(s):  
Sediment Transport ◽  
Transport Model ◽  
Dam Break ◽  
Sediment Transport Model ◽  
Rectangular Mesh ◽  
Dam Break Flow ◽  
Non Equilibrium
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