Sediment Incipient Motion in Sewer with a Bed Deposit

Wan Hanna Melini, Wan Mohtar and Bong, Charles Hin Joo and Aminuddin, Ab. Ghani and Mir Jafar Sadegh, Safari and Aizat Mohd, Taib and Haitham Abdulmohsin, Afan and Ahmed, El-Shafie (2022) Sediment Incipient Motion in Sewer with a Bed Deposit. Teknik Dergi, 33 (1). pp. 11473-11486. ISSN 1300-3453

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Abstract

This paper analyses experimental data on sediment incipient motion with varying sediment bed thickness (of d50, 5, 10 and 24 mm). Sediment particles (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.

Item Type: Article
Uncontrolled Keywords: Threshold criteria of sediment motion, shields parameter, sediment bed thickness
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TC Hydraulic engineering. Ocean engineering
Divisions: Academic Faculties, Institutes and Centres > Faculty of Engineering
Depositing User: Hin Joo
Date Deposited: 29 Nov 2021 09:10
Last Modified: 03 Feb 2022 06:45
URI: http://ir.unimas.my/id/eprint/36840

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