scholarly journals Modeling of Sediment Transport in Surface Flow with a Grass Strip

10.5772/22664 ◽  
2011 ◽  
Author(s):  
Takahiro Shiono ◽  
Kuniaki Miyamoto
Keyword(s):  
Sediment Transport ◽  
Surface Flow ◽  
Grass Strip

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.

Pulsation effects on pollutant and sediment transport in free-surface flow

2016 ◽  
Vol 219 ◽  
pp. 685-695 ◽  
Author(s):  
Nawel Khaldi ◽  
Yoldoss Chouari ◽  
Hatem Mhiri ◽  
Philippe Bournot
Keyword(s):  
Free Surface ◽  
Sediment Transport ◽  
Free Surface Flow ◽  
Surface Flow

A Laboratory Study of Sediment Transport in Free Surface Flow

2005 ◽  
Author(s):  
Alfred D. Parr
Keyword(s):  
Sediment Transport ◽  
Transport Phenomena ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Local Scour ◽  
Bridge Piers ◽  
Bed Load ◽  
Dimension Lumber ◽  
Hands On ◽  
Bed Forms

This paper discusses an undergraduate fluid mechanics laboratory session. The lab allows the students to observe various sediment transport phenomena in a hands-on manner. The experiments are performed in a glass-walled, tilting sediment flume. The following sediment transport phenomena are created and observed by the students — bed load, suspended load, bed forms (ripples, dunes, antidunes...), surface waves over various bed forms and local scour at flow obstructions including bridge piers and abutments. Students are able to observe local scour using PVC pipes for bridge piers and dimension lumber for abutment scour. Since the flume is 12.2-m long, a large group of students can spread out along both sides of the flume to observe bed forms and to perform local scour tests.

scholarly journals SewerSedFoam: A Model for Free Surface Flow, Sediment Transport, and Deposited Bed Morphology in Sewers

Water ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 270 ◽  
Author(s):  
Madhu K Murali ◽  
Matthew R Hipsey ◽  
Anas Ghadouani ◽  
Zhiguo Yuan
Keyword(s):  
Free Surface ◽  
Sediment Transport ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Bedload Transport ◽  
Sediment Deposition ◽  
Suspended Sediment Transport ◽  
Flow Solver ◽  
Bed Morphology ◽  
Bedload Sediment

This paper aims to bridge the gap in the detailed modelling of flow and sediment process interactions in sewers through the development of a computational fluid dynamics (CFD) model. It draws on previous models developed for surface water sediment transport in the OpenFOAM CFD framework and builds on them to improve their suitability for sewer sediment processes. Three distinct sediment processes, suspended sediment transport, bedload transport, and deposited bed morphology, are incorporated into a free surface flow solver, interFoam. This sewer sediment model, called SewerSedFoam, models the impacts of sediment deposition and erosion on flow velocity by using dynamic mesh deformation to capture the movement of the deposited bed and its morphology. Further, three sediment classes, two suspended and one bedload sediment, can be modelled along with some bed stabilization and consolidation effects during deposition and erosion, respectively. The functionality of the overall model in modelling sewer sediment deposition and erosion is promising, although the validation of a large magnitude sediment erosion event has been limited by the availability of granular data in existing case studies.

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