Experimental and numerical investigation of scour downstream contracted spillways

• Autorzy: Nasralla Tarek H.

Identyfikatory

DOI

10.24425/jwld.2021.139943

• Języki publikacji: EN

Abstrakty

EN

A study of scour downstream of free hydraulic jump in stilling basin of stepped spillways was carried out. This paper employed an experimental study to investigate the stepped spillway with the movable bed material of D₅₀= 3.1 mm. The effect of the contraction ratio of the stepped spillway was highlighted. Different downstream divergent angle was studied to minimise the scour depth, the results showed that the relative scour depth was reduced by 23% for divergent angle is equal to 170°, different shapes of buffer in stilling basin were also studied to reduce the scour depth where the considered buffer decrease the relative scour depth up to 84%. This study was simulated by Flow 3D program to analyse the scour hole formed using velocity vectors at the bed. The simulated results well agreed with the measured data.

Słowa kluczowe

EN

buffers; contraction; downstream; Flow-3D; scour; spillway

• Wydawca: Wydawnictwo ITP
• Czasopismo: Journal of Water and Land Development
• Rocznik: 2022
• Tom: no. 52
• Strony: 53--59
• Opis fizyczny: Bibliogr. 20 poz., fot., rys., tab., wykr.

Twórcy

autor

Nasralla Tarek H.

• Benha University, Benha Faculty of Engineering, Civil Engineering Department, 13512, Benha, Qalubiya, Egypt

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).