Apron and macro roughness as scour countermeasures downstream of block ramps

Kurdistani, S. M.; Varaki, M. Esmaeili; Moayedi Moshkaposhti, M.

doi:10.1080/09715010.2023.2300067

ISH Journal of Hydraulic Engineering

2024

DOI: 10.1080/09715010.2023.2300067

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Apron and macro roughness as scour countermeasures downstream of block ramps

S. M. Kurdistani,

M. Esmaeili Varaki,

M. Moayedi Moshkaposhti

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2024

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Cited by 2 publications

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Scour Features due to Inclined and Curved Rock Sills at River Bends

Mahmoudi Kurdistani,

Palermo,

Pagliara

2024

J. Irrig. Drain Eng.

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Scour Features due to Inclined and Curved Rock Sills at River Bends

Mahmoudi Kurdistani,

Palermo,

Pagliara

2024

J. Irrig. Drain Eng.

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On the hydraulic performance of the inclined drops: the effect of downstream macro-roughness elements

Kalateh,

Aminvash,

Daneshfaraz

2024

AQUA — Water Infrastructure, Ecosystems and Society

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The main goal of the present study is to investigate the effects of macro-roughnesses downstream of the inclined drop through numerical models. Due to the vital importance of geometrical properties of the macro-roughnesses in the hydraulic performance and efficient energy dissipation downstream of inclined drops, two different geometries of macro-roughnesses, i.e., semi-circular and triangular geometries, have been investigated using the Flow-3D model. Numerical simulation showed that with the flow rate increase and relative critical depth, the flow energy consumption has decreased. Also, relative energy dissipation increases with the increase in height and slope angle, so that this amount of increase in energy loss compared to the smooth bed in semi-circular and triangular elements is 86.39 and 76.80%, respectively, in the inclined drop with a height of 15 cm and 86.99 and 65.78% in the drop with a height of 20 cm. The Froude number downstream on the uneven bed has been dramatically reduced, so this amount of reduction has been approximately 47 and 54% compared to the control condition. The relative depth of the downstream has also increased due to the turbulence of the flow on the uneven bed with the increase in the flow rate.

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Apron and macro roughness as scour countermeasures downstream of block ramps

Cited by 2 publications

References 39 publications

Scour Features due to Inclined and Curved Rock Sills at River Bends

Scour Features due to Inclined and Curved Rock Sills at River Bends

On the hydraulic performance of the inclined drops: the effect of downstream macro-roughness elements

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