The Effect of Thickness and Number of Permeable Obstacles on Density Current Control and Trapping

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Jahangir Alireza; ESMAILI KAZEM; FAGHFOUR MAGHREBI MAHMOUD

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Journal Paper

Paper Information

Journal: JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION Year:2021 | Volume:10 | Issue:3 Page(s): 15-30

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Information Journal Paper

Title

The Effect of Thickness and Number of Permeable Obstacles on Density Current Control and Trapping

Author(s)

Jahangir Alireza | ESMAILI KAZEM | FAGHFOUR MAGHREBI MAHMOUD | Issue Writer Certificate

Keywords

Density CurrentQ2

Suspended SedimentationQ1

Obstacle ThicknessQ1

Number of ObstaclesQ1

Permeable ObstacleQ1

Abstract

Understanding and studying the river flooding, which in most cases is Density Current, can help to reduce adverse effects of sedimentation. To this end, the creation of obstacles in the bed of stream will be effective. In this paper, the effect of thickness (dimension) and the second layer of Permeable Obstacles on the control and trapping of Density Current is investigated experimentally. For this purpose, two types of groove and cavity obstacles with grooves and cavity diameters equal to 3 mm and made of plaque glass were used. Density Currents were created by adding an insoluble, suspended polymer of expanded polystyrene with a mean diameter of 1. 15 mm and a density of 1. 155 g / l. The experiments utilized two different concentrations (10 and 20%), five different porosities, four different angles, four different thicknesses and two barrier layers. The results showed that the Density Current process with 10% porosity of the groove obstacle increased with increasing thickness. The second layer of obstacles have increased the material passage through both groove and cavity obstacles. This increase was recorded in the groove type of 1. 96 and the cavity type of 2. 34. Investigations showed that the optimal distance of the second obstacle from the first was 2. 25 meters. According to the results, under similar conditions, cavity obstacles always perform better than groove ones.

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APA: Copy

Jahangir, Alireza, ESMAILI, KAZEM, & FAGHFOUR MAGHREBI, MAHMOUD. (2021). The Effect of Thickness and Number of Permeable Obstacles on Density Current Control and Trapping. JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION, 10(3 ), 15-30. SID. https://sid.ir/paper/412649/en

Vancouver: Copy

Jahangir Alireza, ESMAILI KAZEM, FAGHFOUR MAGHREBI MAHMOUD. The Effect of Thickness and Number of Permeable Obstacles on Density Current Control and Trapping. JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION[Internet]. 2021;10(3 ):15-30. Available from: https://sid.ir/paper/412649/en

IEEE: Copy

Alireza Jahangir, KAZEM ESMAILI, and MAHMOUD FAGHFOUR MAGHREBI, “The Effect of Thickness and Number of Permeable Obstacles on Density Current Control and Trapping,” JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION, vol. 10, no. 3 , pp. 15–30, 2021, [Online]. Available: https://sid.ir/paper/412649/en

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