Numerically Study of Flow and Scour Patterns Due to Series T-Shaped Spur Dikes

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Vaghefii M.; Safarpoori Y.; Akbarii M.

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Journal: IRANIAN JOURNAL OF WATERSHED MANAGEMENT SCIENCE AND ENGINEERING Year:2017 | Volume:11 | Issue:38 Page(s): 35-46

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Title

Numerically Study of Flow and Scour Patterns Due to Series T-Shaped Spur Dikes

Author(s)

Vaghefii M. | Safarpoori Y. | Akbarii M. | Issue Writer Certificate

Keywords

SSIIM ModelQ1

T-shaped Spur DikeQ1

Series Spur DikesQ1

ScourQ2

SubmergenceQ1

Abstract

This paper addressed variations in Scour and flow patterns around T-shaped Spur Dikes located at a 90 degree mild bend. Simulation of flow and Scour patterns was conducted through 7 distinct modeling for a single and non-submerged spur dike and also with Series Spur Dikes at distances of 2. 5, 3. 5, and 5 times the spur dike length from each other in non-submerged and submerged (25% Submergence) modes using a numerical model. A comparison between the experimental and numerical results was carried out in nonsubmerged and single mode. Accommodation of experimental and numerical data was indicative of the efficiency of SSIIM numerical model in Scour and flow pattern simulation in bend channels. The results of this study demonstrated that the dimensions and location of vortices, as well as the degree of Scour, would change by varying the distance between the spur dikes, and spur dikes’ Submergence ratio; hence, in a submerged mode, increasing the distance between the spur dikes would increase the degree of Scour and the maximum sedimentation, while increasing spur Submergence would decrease the maximum Scour and sedimentation, and the maximum secondary flow strength occurring at the upstream end of the first spur dike would decrease by 34. 55%. In addition, a 25% Submergence of spur dikes would lead the maximum Scour to occur at the distance from the third spur dike to the bend exit.

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APA: Copy

Vaghefii, M., Safarpoori, Y., & Akbarii, M.. (2017). Numerically Study of Flow and Scour Patterns Due to Series T-Shaped Spur Dikes. IRANIAN JOURNAL OF WATERSHED MANAGEMENT SCIENCE AND ENGINEERING, 11(38 ), 35-46. SID. https://sid.ir/paper/134807/en

Vancouver: Copy

Vaghefii M., Safarpoori Y., Akbarii M.. Numerically Study of Flow and Scour Patterns Due to Series T-Shaped Spur Dikes. IRANIAN JOURNAL OF WATERSHED MANAGEMENT SCIENCE AND ENGINEERING[Internet]. 2017;11(38 ):35-46. Available from: https://sid.ir/paper/134807/en

IEEE: Copy

M. Vaghefii, Y. Safarpoori, and M. Akbarii, “Numerically Study of Flow and Scour Patterns Due to Series T-Shaped Spur Dikes,” IRANIAN JOURNAL OF WATERSHED MANAGEMENT SCIENCE AND ENGINEERING, vol. 11, no. 38 , pp. 35–46, 2017, [Online]. Available: https://sid.ir/paper/134807/en

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