Sediment Incipient Motion in Sewer with a Bed Deposit

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Teknik Dergi
Volume:33 Issue:1
Sediment Incipient Motion in Sewer with a Bed Deposit

Sediment Incipient Motion in Sewer with a Bed Deposit

Authors : Wan Hanna Melini WAN MOHTAR, Charles BONG HIN JOO, Aminuddin AB GHANI, Mir Jafar Sadegh SAFARI, Aizat Mohd TAIB, Haitham AFAN, Ahmed ELSHAFIE

Pages : 11473-11486

Doi:10.18400/tekderg.572529

View : 5 | Download : 4

Publication Date : 2022-01-01

Article Type : Research Paper

Abstract :This paper analyses experimental data on sediment incipient motion with varying sediment bed thickness insert ignore into journalissuearticles values(of d50, 5, 10 and 24 mm);. Sediment particles insert ignore into journalissuearticles values(with sizes ranging from 0.5 mm to 4.78 mm); were used to evaluate the effect of deposited bed. Variation of shear velocity estimation was investigated where the critical Shields parameter was expressed using bed-slope product u∗cb, log-law u∗cl and was extended in terms of critical mean velocity. The critical Shields parameters obtained were significantly lower than the traditional Shields curve when u∗cl was used compared to u∗cb. Higher critical mean velocity is needed for shallower deposits.
Keywords : threshold criteria of sediment motion, Shields parameter, sediment bed thickness

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