A Self-Cleansing Model for Trapezoidal Channels

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Sadegh Safari Mir Jafar; Mohammadi Mirali

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Journal Paper

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Journal: WATER AND WASTEWATER Year:2017 | Volume:28 | Issue:5 Page(s): 84-91

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Information Journal Paper

Title

A Self-Cleansing Model for Trapezoidal Channels

Author(s)

Sadegh Safari Mir Jafar | Mohammadi Mirali | Issue Writer Certificate

Keywords

Bed LoadQ3

Cross-SectionQ1

Sediment transportQ3

Self-CleansingQ1

Trapezoidal ChannelQ2

Abstract

Investigation of channel capability for Sediment transport is an important factor in sanitary sewer and urban runoff drainage system design. This is because of the undesirable effects arising from the reduced channel hydraulic capacity due to the deposition of sediment particles. Self-Cleansing channel designs minimize sediment deposition and, thereby, prevent reduced channel hydraulic capacity. Our literature review revealed no previous report on Self-Cleansing models yet proposed for channels with trapezoidal sections. An experimental study was conducted using a Trapezoidal Channel and a non-deposited bed to investigate the Self-Cleansing process with four different sediment particle sizes under various slopes and discharge rates. The experimental data were exploited to develop a Bed Load Self-Cleansing model for the Trapezoidal Channel considering the specific flow, fluid, sediment, channel, and sediment characteristics. The proposed model was then compared with those reported in the literature for circular and rectangular channels. It was found that channel section geometry is a decisive factor in channel Self-Cleansing rate. Comparisons revealed that circular and rectangular Self-Cleansing models produce an error of approximately 15% when employed for designing channels with trapezoidal sections. Hence, the model developed in this study is recommended for designing channels with trapezoidal sections

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APA: Copy

Sadegh Safari, Mir Jafar, & Mohammadi, Mirali. (2017). A Self-Cleansing Model for Trapezoidal Channels. WATER AND WASTEWATER, 28(5 ), 84-91. SID. https://sid.ir/paper/103394/en

Vancouver: Copy

Sadegh Safari Mir Jafar, Mohammadi Mirali. A Self-Cleansing Model for Trapezoidal Channels. WATER AND WASTEWATER[Internet]. 2017;28(5 ):84-91. Available from: https://sid.ir/paper/103394/en

IEEE: Copy

Mir Jafar Sadegh Safari, and Mirali Mohammadi, “A Self-Cleansing Model for Trapezoidal Channels,” WATER AND WASTEWATER, vol. 28, no. 5 , pp. 84–91, 2017, [Online]. Available: https://sid.ir/paper/103394/en

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