scholarly journals Sediment transport modeling at Stono Inlet and adjacent beaches, South Carolina

2021 ◽  
Author(s):  
Honghai Li ◽  
Grace Maze ◽  
Kevin Conner ◽  
John Hazelton
Keyword(s):  
South Carolina ◽  
Sediment Transport ◽  
Transport Model ◽  
Estuarine System ◽  
Northeast Section ◽  
Coastal Modeling ◽  
Sediment Loss ◽  
Flow And Sediment Transport ◽  
Hydrodynamic Data ◽  
Morphology Changes

This report documents a numerical modeling investigation for dredged material from nearshore borrow areas and placed on Folly Beach adjacent to Stono Inlet, South Carolina. Historical and newly collected wave and hydrodynamic data around the inlet were assembled and analyzed. The datasets were used to calibrate and validate a coastal wave, hydrodynamic and sediment transport model, the Coastal Modeling System. Sediment transport and morphology changes within and around the immediate vicinity of the Stono Inlet estuarine system, including sand borrow areas and nearshore Folly Beach area, were evaluated. Results of model simulations show that sand removal in the borrow areas increases material backfilling, which is more significant in the nearshore than the offshore borrow areas. In the nearshore Folly Beach area, the dominant flow and sediment transport directions are from the northeast to the southwest. Net sediment gain occurs in the central and southwest sections while net sediment loss occurs in the northeast section of Folly Island. A storm and a 1-year simulation developed for the study produce a similar pattern of morphology changes, and erosion and deposition around the borrow areas and the nearshore Folly Beach area.

scholarly journals NUMERICAL MODEL INVESTIGATION OF SELECTED TIDAL INLET-BAY SYSTEM CHARACTERISTICS

1978 ◽  
Vol 1 (16) ◽  
pp. 76
Author(s):  
William N. Seelig ◽  
Robert M. Sorensen
Keyword(s):  
Sediment Transport ◽  
Numerical Model ◽  
Transport Model ◽  
Tidal Inlet ◽  
Inlet Channel ◽  
Astronomical Tide ◽  
Order Of Magnitude ◽  
Flow And Sediment Transport ◽  
Transport Factors ◽  
System Characteristics

A spatially integrated one-dimensional numerical model of inlet bay hydraulics has been combined with a simple sediment transport model to investigate selected tidal inlet-bay system characteristics. A parametric study has been performed using the models to determine the effect of various factors on the net direction and order of magnitude of inlet channel flow and sediment transport. Factors considered include astronomical tide type, storm surge height and duration, variation in bay surface area, time-dependent channel friction factor, and the addition of a second inlet connecting the bay and sea.

scholarly journals A Three-Dimensional Flow and Sediment Transport Model for Free-Surface Open Channel Flows on Unstructured Flexible Meshes

Fluids ◽  
2019 ◽  
Vol 4 (1) ◽  
pp. 18 ◽  
Author(s):  
Yong Lai ◽  
Kuowei Wu
Keyword(s):  
Free Surface ◽  
Sediment Transport ◽  
Suspended Sediment ◽  
Open Channel ◽  
Transport Model ◽  
Three Dimensional ◽  
Suspended Sediment Transport ◽  
Open Channel Flows ◽  
Sediment Transport Model ◽  
Flow And Sediment Transport

Three-dimensional (3D) hydrostatic-pressure-assumption numerical models are widely used for environmental flows with free surfaces and phase interfaces. In this study, a new flow and sediment transport model is developed, aiming to be general and more flexible than existing models. A general set of governing equations are used for the flow and suspended sediment transport, an improved solution algorithm is proposed, and a new mesh type is developed based on the unstructured polygonal mesh in the horizontal plane and a terrain-following sigma mesh in the vertical direction. The new flow model is verified first with the experimental cases, to ensure the validity of flow and free surface predictions. The model is then validated with cases having the suspended sediment transport. In particular, turbidity current flows are simulated to examine how the model predicts the interface between the fluid and sediments. The predicted results agree well with the available experimental data for all test cases. The model is generally applicable to all open-channel flows, such as rivers and reservoirs, with both flow and suspended sediment transport issues.

scholarly journals A coupled wave–current–sediment transport model for an estuarine system: Application to the Río de la Plata and Montevideo Bay

2017 ◽  
Vol 52 ◽  
pp. 107-130 ◽  
Author(s):  
Pablo Santoro ◽  
Mónica Fossati ◽  
Pablo Tassi ◽  
Nicolas Huybrechts ◽  
Damien Pham Van Bang ◽  
...  
Keyword(s):  
Sediment Transport ◽  
System Application ◽  
Transport Model ◽  
Estuarine System ◽  
Rio De La Plata ◽  
Río De La Plata ◽  
La Plata ◽  
Sediment Transport Model ◽  
Coupled Wave

Two dimensional river flow and sediment transport model

2014 ◽  
Vol 15 (3) ◽  
pp. 595-625 ◽  
Author(s):  
Zoltan Horvat ◽  
Mirjana Isic ◽  
Miodrag Spasojevic
Keyword(s):  
Sediment Transport ◽  
River Flow ◽  
Transport Model ◽  
Two Dimensional ◽  
Sediment Transport Model ◽  
Flow And Sediment Transport

Developing a 2D vertical flow and sediment transport model for open channels using the Youngs-VOF method

2016 ◽  
Vol 35 (2) ◽  
pp. 444-451 ◽  
Author(s):  
Dongmiao Zhao ◽  
Jun Tang ◽  
Xiuguang Wu ◽  
Changning Lin ◽  
Lijun Liu ◽  
...  
Keyword(s):  
Sediment Transport ◽  
Transport Model ◽  
Vof Method ◽  
Open Channels ◽  
Vertical Flow ◽  
Sediment Transport Model ◽  
Flow And Sediment Transport

scholarly journals Numerical modeling of the lateral widening of levee breach by overtopping in a flume with 180° bend

2014 ◽  
Vol 14 (1) ◽  
pp. 11-20 ◽  
Author(s):  
S.-T. Dou ◽  
D.-W. Wang ◽  
M.-H. Yu ◽  
Y.-J. Liang
Keyword(s):  
Sediment Transport ◽  
Flow Rate ◽  
Development Process ◽  
Transport Model ◽  
Flow State ◽  
Total Load ◽  
Levee Breach ◽  
Water Head ◽  
Flow And Sediment Transport ◽  
Submerged Area

Abstract. Floods caused by levee breaching pose disastrous risks to the lower reaches and the flood flow zones of rivers. Thus, a comprehensive assessment of flow and sediment transport during floods must be performed to mitigate flood disasters. Given that the flow state becomes relatively more complex and the range of the submerged area becomes more extensive after a levee breach, this paper established a flow and sediment model by using two-dimensional shallow water equations (SWEs) to explore the breach development process and the flow and sediment transport in a curved bed after a levee breach due to overtopping. A three-element weighted essentially non-oscillatory Roe scheme was adopted for the discretization of SWEs. In addition, a non-equilibrium total-load sediment transport model was established to simulate the scour depth development process of the breach. A stable equilibrium of the breach was established based on flow shear force and soil shear strength. The lateral widening of the breach was simulated by the scouring-collapse lateral widening mode. These simulations, together with the levee breach experiment conducted in the laboratory, demonstrate the validity of the flow and sediment transport process established in this paper. The effects of water head in and out of the watercourse, the flow rate, the levee sediment grading, and other variables during levee breaching were also analyzed. The mathematical model calculation provided a number of physical quantities, such as flow rate and flow state at the breach, that are difficult to measure by using the current laboratory facilities. The results of this research provide fundamental data for developing measures that can reduce casualties and asset loss due to floods caused by levee breaching.

scholarly journals Numerical simulation of levee breach by overtopping in a flume with 180° bend

2013 ◽  
Vol 1 (4) ◽  
pp. 3935-3965
Author(s):  
S.-T. Dou ◽  
D.-W. Wang ◽  
M.-H. Yu ◽  
Y.-J. Liang
Keyword(s):  
Sediment Transport ◽  
Development Process ◽  
Transport Model ◽  
Flow State ◽  
Total Load ◽  
Levee Breach ◽  
Laboratory Facilities ◽  
Water Head ◽  
Flow And Sediment Transport ◽  
Submerged Area

Abstract. Floods caused by levee breaching pose disastrous risks to the lower reaches and the flood flow zones of rivers. Thus, a comprehensive assessment of flow and sediment transport during floods must be performed to mitigate flood disasters. Given that the flow state becomes relatively more complex and the range of the submerged area becomes more extensive after a levee breach, this paper established a flow and sediment model by using two-dimensional shallow water equations (SWEs) to explore the break development process and the flow and sediment transport in a curved bed after a levee breach due to overtopping. A three-element weighted essentially non-oscillatory-Roe scheme was adopted for the discretization of SWEs. In addition, a non-equilibrium total-load sediment transport model was established to simulate the scour depth development process of the break. A stable equilibrium of the break was established based on flow shear force and soil shear strength. The lateral widening of the break was simulated by the scouring-collapse lateral widening mode. These simulations, together with the levee breach experiment conducted in the laboratory, demonstrate the validity of the flow and sediment transport process established in this paper. The effects of water-head in and out of the watercourse, the rate of flow, the levee sediment grading, and other variables during levee breaching were also analyzed. The mathematical model calculation provided a number of physical quantities, such as rate of flow and flow state at the break, that are difficult to measure by using the current laboratory facilities. The results of this research provide fundamental data for developing measures that can reduce casualties and asset loss due to floods caused by levee breaching.

A 2-D Vertical Finite-Element Model for Sediment Transport Due to Tidal Flow

2006 ◽  
Author(s):  
Shi Sen Li ◽  
Tao Liu ◽  
Guojie Li ◽  
Jie Gao
Keyword(s):  
Finite Element ◽  
Sediment Transport ◽  
Finite Element Model ◽  
Transport Model ◽  
Tidal Flow ◽  
Element Model ◽  
Conservation Equation ◽  
Primary Objective ◽  
Suspended Sediment Transport ◽  
Flow And Sediment Transport

An estuarine two-dimensional vertical finite-element model of suspended sediment transport has been established by the sediment conservation equation. The primary objective of the present paper is to develop and verify a 2DV estuarine tidal flow and sediment transport model derived by the moving grid FEM. To this end, finite-element method has been used. An arbitrarily shaped quadrilateral element has been selected. This model has been compared with analytical solution. The tidal flow model was developed by Li and Shi. This represents a step towards developing a general 2DV estuarine model.

Sign in / Sign up

Export Citation Format

Share Document