Backwater Computation for Transcritical River Flows

Beffa, Cornel

doi:10.1061/(asce)0733-9429(1996)122:12(745)

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…As illustrated by Henderson (Henderson, 1966) and (Sturm, 2001), the survey of backwater rise may be caused to flow retraction due to bridges piers was being by Yarnell (Yarnell, 1934). Moreover, the backwater rise upstream bridges was studied by Atabay et al (Atabay et al, 2018) Beffa (Beffa, 1996), Charbeneau et al (Charbeneau and Holly, 2001;El-Alfy, 2006;El-Alfy, 2009;Hunt and Brunner, 1995;Kaatz, 1997;Seckin, 2004;Smibabu et al, 2011;Soliman, 1989).…”

Section: Introductionmentioning

confidence: 99%

Backwater Rise Due to Bridge Piers in Curved Channels under Subcritical Flow Conditions

2019

Aust. J. Basic & Appl. Sci.

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The construction of bridges across rivers is challenging, as bridge piers act as obstacles to waterways and cause a narrowing of the natural channel. Therefore, it is critical to know the increase in water surface elevation due to bridge constrictions, particularly during flood events. In the past more researchers have a try to improve experimental equations based on the perception of mechanics of backwater rise. However most of the investigators have discussed the backwater rise at bridge pier located in a straight channel and no study has been discussed when bridge pier is located in a curved channel. Our study showed that, backwater rise is studied both in straight channel and in a rectangular curved channel having a central angle of 30° for subcritical flow condition, which is the type of flow that exists in most rivers. A different pier shapes were located in the straight channel, moreover in divisions 0, 15 and 30 degrees in the curved channel. This research observed that the values of backwater rise at the curved channel are bigger than those of straight channel, the maximum backwater rise occurs at section 0 degrees and the minimum occurs at section 30 degree of the curved channel.

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Section: Introductionmentioning

confidence: 99%

Backwater Rise Due to Bridge Piers in Curved Channels under Subcritical Flow Conditions

2019

Aust. J. Basic & Appl. Sci.

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“…As illustrated by Henderson (Henderson, 1966) and (Sturm, 2001), the survey of afflux may be caused to flow retraction due to bridges piers was being by Yarnell (Yarnell, 1934). Moreover, the afflux upstream bridges was studied by Atabay et al (Atabay et al, 2018) Beffa (Beffa, 1996) This research was initiated to study the afflux due to bridge piers in curved channels, experimentally for supercritical flow condition, which is the type of flow that exists in rivers and other high-velocity channels during flood events. The empirical finding on afflux at different pier shapes position of among departments in a 30 degree curved channel is presented.…”

Section: Introductionmentioning

confidence: 99%

Assessment of High-Velocity Free Surface Flow Interaction with a Bridge Pier in A Curved Channel

2019

J. Appl. Sci. Res.

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Free surface flow in the vicinity of bridge piers on a fixed channel bed is a classical problem of open-channel hydraulics. Prior prediction of flow profiles can inform and improve the design of expensive structures, such as high velocity channels and bridges, in particular the height of channel walls and bridge decks. This study used experimental work to simulate free surface flow through a curved rectangular cross section channel containing a single bridge pier. The study investigates the impact of curvature degree of the channel, variations of contraction ratio, discharge (represented by a Froude number), and the length and thickness and shape of the bridge pier on the high velocity free surface flow profile. A simulation of flow in the curved channel with the obstruction was performed for different inflow discharges determining the supercritical flow in the cross-section of a channel constriction. The corresponding afflux (maximum backwater rise in upstream due to bridge constrictions) were measured for each discharge and the measurements yield detailed information about flow structure near the obstruction. The results demonstrated that the values of afflux for the supercritical flow at the curved channel are bigger than those of straight channel, and the difference between the afflux values in both curved and straight channels depends on the curvature degree of the channel.

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Modeling considerations for simulation of flow in bedrock channels

Miller

Cluer

1998

Geophysical Monograph Series

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Backwater Computation for Transcritical River Flows

Cited by 3 publications

References 6 publications

Backwater Rise Due to Bridge Piers in Curved Channels under Subcritical Flow Conditions

Backwater Rise Due to Bridge Piers in Curved Channels under Subcritical Flow Conditions

Assessment of High-Velocity Free Surface Flow Interaction with a Bridge Pier in A Curved Channel

Modeling considerations for simulation of flow in bedrock channels

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