Experiment and simulation of turbulent flow in local scour around a spur dyke

Zhang, H.; Nakagawa, Hajime; Kawaike, Kenji; Baba, Yasuyuki

doi:10.1016/s1001-6279(09)60014-7

Cited by 65 publications

(31 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…12 shows the variations of secondary flow and vorticity along the bend with spur dike at section 75° as computed by using Eqs. (1) and (5). It is obvious that results of both methods follow the same trend along the bend.…”

Section: Resultsmentioning

confidence: 81%

“…They proved that as the length of the spur dike increases, length of separation zone and the formed vortex in the zone increases [4]. Zhang et al in 2009, investigated turbulent flow in the local scour hole around a single non-submerged spur dyke experimentally and numerically. They measured the scour geometry and flow velocities in details with a high-resolution laser displacement meter, electro-magnetic velocimetries and PIV (Particle image velocimetry) [5].…”

Section: Introductionmentioning

confidence: 99%

“…Zhang et al in 2009, investigated turbulent flow in the local scour hole around a single non-submerged spur dyke experimentally and numerically. They measured the scour geometry and flow velocities in details with a high-resolution laser displacement meter, electro-magnetic velocimetries and PIV (Particle image velocimetry) [5]. Duan et al in 2009, investigated average and turbulent flow around a straight spur dike located in an experimental channel with rigid bed.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experimental Investigation on 3D Flow around a Single T-Shaped Spur Dike in a Bend

Vaghefi

Ghodsian

Akbari

2017

Period. Polytech. Civil Eng.

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental Investigation on 3D Flow around a Single T-Shaped Spur Dike in a Bend

Vaghefi

Ghodsian

Akbari

2017

Period. Polytech. Civil Eng.

View full text Add to dashboard Cite

show abstract

“…Several studies have adopted numerical methods to investigate the scour process around bridge piers [14][15][16][17][18] and super dikes [19][20][21]. Time-consuming three-dimensional (3D) numerical models produce sharp resolutions of 3D flow fields and local scour around hydraulic structures under laboratory conditions.…”

Section: Of 18mentioning

confidence: 99%

Simplified Simulation Method for Flood-Induced Bend Scour—A Case Study Near the Shuideliaw Embankment on the Cho-Shui River

Guo¹,

Hong²,

Chen³

et al. 2017

Preprint

View full text Add to dashboard Cite

Abstract:The modeling of flood-induced bend scour near embankment toes can provide important information for river engineering, embankment safety warnings, and emergency action management. During the rainy seasons, short-term general scour and bend scour are the most common causes for the failure of reinforced concrete embankments in Taiwan. To gain a deeper understanding of the scouring process near levee foundations, this study proposed a straightforward and practical method for bend scour simulation. The proposed simulation method is subdivided into three stages: two-dimensional flow simulation, general scour estimation, and bend scour estimation. A new bend-scour computation equation is proposed and incorporated into a two-dimensional hydraulic finite-volume model for simulating the evolution of bend scour depth around embankment toes. The proposed method is applied to simulate the temporal evolution of bend scouring near the Shuideliaw Embankment on the Cho-Shui River in Taiwan, where serious failure occurred during the June 2012 monsoon. Field data were gathered using the numbered-brick technique at the Shuideliaw Embankment to demonstrate the accuracy of the proposed method. The results of the bend scour simulations compared reasonably well with field measurements, indicating close agreement in terms of water levels and bend scour depths near the Shuideliaw Embankment. The proposed method was found to quickly estimate the maximum short-term general scour and bend scour depths for further enhancement of the safety of the embankment toe.

show abstract

“…When local scour occurs, the flow generally becomes three-dimensional and is composed of complex vortex systems according to research on local scour around other types of hydraulic structures 20), 21) . Therefore, the detailed 3D velocity data is collected and analyzed in this study.…”

Section: Velocity Profiles Near the Weirmentioning

confidence: 99%

Weir removal and its influence on hydro-morphological features of upstream channel

Zhang

Muto

Nakagawa

et al. 2012

J. JSCE

Self Cite

View full text Add to dashboard Cite

This paper presents an experimental study on the upstream channel responses due to partial removal of a weir, focusing on the impacts of the removal shape of the weir on the hydro-morphological features. It is found that the shape of the removal significantly affects the 3D flow structure and the local scour around the weir and poses influences on the propagation process of upstream sandbars. However, the characteristics of the sandbar system at the quasi-equilibrium stage are governed by the removal area rather than the removal shape. Governing parameters characterizing the removal shape is proposed as well. Desirable morphological features could be achieved by a careful selection of those parameters.

show abstract

Experiment and simulation of turbulent flow in local scour around a spur dyke

Cited by 65 publications

References 14 publications

Experimental Investigation on 3D Flow around a Single T-Shaped Spur Dike in a Bend

Experimental Investigation on 3D Flow around a Single T-Shaped Spur Dike in a Bend

Simplified Simulation Method for Flood-Induced Bend Scour—A Case Study Near the Shuideliaw Embankment on the Cho-Shui River

Weir removal and its influence on hydro-morphological features of upstream channel

Contact Info

Product

Resources

About

Experiment and simulation of turbulent flow in local scour around a spur dyke

Cited by 65 publications

References 14 publications

Experimental Investigation on 3D Flow around a Single T-Shaped Spur Dike in a Bend

Experimental Investigation on 3D Flow around a Single T-Shaped Spur Dike in a Bend

Simplified Simulation Method for Flood-Induced Bend Scour&mdash;A Case Study Near the Shuideliaw Embankment on the Cho-Shui River

Weir removal and its influence on hydro-morphological features of upstream channel

Contact Info

Product

Resources

About

Simplified Simulation Method for Flood-Induced Bend Scour—A Case Study Near the Shuideliaw Embankment on the Cho-Shui River