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:: Volume 14, Issue 48 (3-2020) ::
jwmseir 2020, 14(48): 33-41 Back to browse issues page
Control of Scour around the Submarine Pipelines in the River Bed
Vahid Jabari, Alireza Masjedi *, Mohammad Haidarnejad, Amir Abbas Kamanbedast, Amin Bordbar
Department of Water Science and Engineering, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
Abstract:   (233 Views)

This paper presents, a set of experiments was conducted in a Plexiglas flume setup to investigate the simultaneous use of pipe and blade in the scour control around a submerged pipe. A vertical cylindrical pipe with and without a blade placed below it was selected for the experiments. The experiments were carried out in two different sates: with blade and without blade the pipe. Moreover, they were performed for four different pipe diameters, flow intensities, and blades where clear water was also used. The results showed for all states that simultaneous installation of pipe and blade below it caused a substantial decrease in the scour length. In other words, applying the blade produced a decrease in the scour length below the pipe by %21. Furthermore, in all states, simultaneous use of pipe and blade engendered a more increased scour depth than the absence of the blade, by %22. Besides, maximum scour depth for simultaneous use of pipe and blade was obtained equal to %55 when the blade width, pipe diameter, and Froude number were set to 1.24, 4.8 cm, and 0.42, respectively.

Keywords: Scour, Blade, Submarine Pipeline, River
Full-Text [PDF 1103 kb]   (100 Downloads)    
Type of Study: Research | Subject: Special
Received: 2019/04/20 | Accepted: 2019/06/25 | Published: 2020/09/27

 


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Jabari V, Masjedi A, Haidarnejad M, Kamanbedast A A, Bordbar A. Control of Scour around the Submarine Pipelines in the River Bed. jwmseir. 2020; 14 (48) :33-41
URL: http://jwmsei.ir/article-1-883-en.html


Volume 14, Issue 48 (3-2020) Back to browse issues page
مجله علوم ومهندسی آبخیزداری ایران Iranian Journal of Watershed Management Science and Engineering
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