Experimental assessment of velocity and bed shear stress in the main channel of a meandering compound channel with one-sided blocks in floodplain

Naghavi, Mohammad; Mohammadi, Mirali; Mahtabi, Ghorban; Abraham, John

doi:10.1016/j.jhydrol.2023.129073

Cited by 4 publications

(1 citation statement)

References 24 publications

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“…Within the bend, the max velocity gradually moves towards the concave bank-side. At the bend outlet, the flow velocity distribution tends to become more uniform, and the max velocity gradually shifts towards the concave bank-side [19] . The longitudinal velocity redistributes on the CS within the bend:…”

Section: Longitudinal Velocity Distributionmentioning

confidence: 99%

Characteristics of secondary flow vorticity and longitudinal velocity in a sharp bend

Sun

et al. 2023

J. Phys.: Conf. Ser.

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The complex flow structure in sharp bends may cause a series of water and sediment problems which are of great risk to flooding control and engineering safety. For this reason, there is of great significance to study the characteristics of secondary flow in sharp bends. In this article, the characteristics of vorticity and longitudinal velocity in sharp bends are studied by laboratory experiments and theoretical analysis. The results showed that there are two opposite circular currents on every cross-section in the bend. The two circular currents show a trend of increasing and decreasing streamwise. Vorticity is used to indicate the secondary flow intensity and is used to adjust the formula of longitudinal average velocity. The new formula fit the experiment data well and can describe the phenomenon of the maximum longitudinal average velocity appearing near the bed surface.

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Section: Longitudinal Velocity Distributionmentioning

confidence: 99%

Characteristics of secondary flow vorticity and longitudinal velocity in a sharp bend

Sun

et al. 2023

J. Phys.: Conf. Ser.

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Experimental study on velocity distribution and bed load transport in compound channels: Effect of the floodplain’s wall parallel with the meandering main channel

Esmaili

Moradi

Khodashenas

2023

Journal of Hydrology

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Bed shear stress distribution across a meander path

Pradhan,

Khatua,

Sahoo

et al. 2024

Journal of Water and Climate Change

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Laboratory experimentation for bed shear stress distribution has been carried out in two sets of meandering channels. The channels have crossover angles of 110° and 60° constructed by ‘sine-generated’ curves over a flume of 4 m width. Variations in bed roughness were studied for the meandering main channel. Bed shear stress distribution across a meandering length for the 110° and 60° channels was examined for different sinuosities and roughnesses. The boundary shear stress study illustrated the position of maximum shear along the apex section and across the meandering path. These variations were observed for different flow depths. A comparison of the bed shear among the three experimental channels was conducted, and the results were analyzed.

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Experimental assessment of velocity and bed shear stress in the main channel of a meandering compound channel with one-sided blocks in floodplain

Cited by 4 publications

References 24 publications

Characteristics of secondary flow vorticity and longitudinal velocity in a sharp bend

Characteristics of secondary flow vorticity and longitudinal velocity in a sharp bend

Experimental study on velocity distribution and bed load transport in compound channels: Effect of the floodplain’s wall parallel with the meandering main channel

Bed shear stress distribution across a meander path

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