Scour profiles at downstream of cascades

Tuna, Muhammed Cihat; Emiroğlu, M. Emin

doi:10.1016/j.scient.2011.05.040

Cited by 16 publications

(7 citation statements)

References 16 publications

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“…The study of scour around hydraulic structures constitutes an important field of research because of its frequent occurrence in engineering applications (Melville et al . ; Emiroglu & Tuna ; Tuna & Emiroglu ).…”

Section: Introductionmentioning

confidence: 99%

Verification of numerical study of scour around spur dikes using experimental data

Karami

Basser

Ardeshir

et al. 2012

Water & Environment J

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Scour phenomenon around a series of impermeable, nonsubmerged spur dikes has been investigated with both experimental and numerical methods. The experiments were conducted under different states of flow intensity (U/Ucr). The scour geometry was measured with a high-resolution laser bed-profiler (LBP). For the numerical simulation phase, a three-dimensional computational fluid dynamics (CFD) model, namely SSIIM 2.0, was used to compute the sediment transport around the spur dikes. The numerical model was based on the finite-volume method. Two turbulence models, namely k-e standard and k-e with re-normalization group (RNG) extensions, were used to predict turbulence, and the k-e model with some RNG extensions was selected because of its best agreement with the measurements. Furthermore, a variety of grids and empirical sediment transport equations were used to find the best state for simulation of scour around a series of spur dikes. Finally, a comparison between experimental and numerical results was carried out to verify the CFD model.

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Section: Introductionmentioning

confidence: 99%

Verification of numerical study of scour around spur dikes using experimental data

Karami

Basser

Ardeshir

et al. 2012

Water & Environment J

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“…The studies on the scour (Aminpour and Farhoudi 2017;Azmathullah et al 2004;Ghaderi et al 2020;Tuna 2012;Tuna and Emiroglu 2011) showed that the maximum scour dimensions rely on the step geometry, sediment diameter, flow discharge, chute angle or slope, and the tail-water depth. The scour depth decreased while step height increased or unit discharge and chute angle reduced.…”

Section: Introductionmentioning

confidence: 99%

“…The scour depth decreased while step height increased or unit discharge and chute angle reduced. Moreover, the maximum scour depth for low tail-water depths was approximately 10−25% deeper than for high tail-water depths (Ghaderi et al 2020;Tuna 2012;Tuna and Emiroglu 2011). A laboratory investigation to predict scour depth and extent downstream of the Ogee spillway has developed two empirical relationships (Hong et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Variation Sediments and Effective Hydraulic Parameters on Scour Downstream of Stepped Spillway

Dah-Mardeh,

Azizyan,

Bejestan

et al. 2023

Water Resour Manage

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The most complicated problem that threatens the spillway's overall stability is local scour downstream of the spillways due to hydraulic jumps and flow disturbance. A series of experiments were conducted in the laboratory of the Water and Soil Research Center to investigate the scour downstream of the hydraulic jump formed on the stepped spillway.Experiments were conducted under different approaching flow discharges, tail-water depths and sediment sizes. The optimal design of parameters including; type, crest and slope of

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“…In particular, the scouring downstream of the dams can seriously compromise the dam stability. For this reason, local scour of the hydraulic structures had been widely investigated (Borghei & Sahebari, 2010;Coleman et al, 2003;Farhoudi & Shayan, 2014;Pagliara et al, 2011;Tuna & Emiroglu, 2011). These researches presented various equations about the depth and location of the maximum local scour value (Balachandar et al, 2000;Champagne et al, 2017;Hoffmans & Pilarczyk, 1995;Mason & Arumugam, 1985;Nik Hassan & Narayanan, 1985;Palermo & Pagliara, 2018).…”

Section: Introductionmentioning

confidence: 99%

Local scour protection using geocell for downstream of spillway

Gül

Sarıcı

Dursun

2021

JER is an international, peer-reviewed journal that publishes f

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Local scour is an important problem for hydraulic structures. The local scour in the downstream of dams causes problems such as the damage of the dam body stabilization, erosion of the slopes, and the submergence of the turbines. There are many studies investigating the local scour prediction of the downstream of the hydraulic structures, but in recent years, these studies have been replaced by studies of local scour reduction. The new idea of confining the bed materials using the geocell is becoming a popular solution. This solution can be especially used for the reinforcement of the soils. In this study, the preventability of the local scour downstream of chute channel by cellular confinement system, also known as geocell, was investigated. As a result, in case of using geocell, percentage reduction of the maximum scour depth up to 40.63% was observed.

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Scour profiles at downstream of cascades

Cited by 16 publications

References 16 publications

Verification of numerical study of scour around spur dikes using experimental data

Verification of numerical study of scour around spur dikes using experimental data

Experimental Study of Variation Sediments and Effective Hydraulic Parameters on Scour Downstream of Stepped Spillway

Local scour protection using geocell for downstream of spillway

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