Investigation of bed morphological variations in channels with a group of parallel unequal spur dikes at various orientations

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ABBASI SAEED; Pourshahbaz Hanif; Taghvai Pouria

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Journal: Journal of Irrigation and Water Engineering Year:2019 | Volume:9 | Issue:35 Page(s): 38-48

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Title

Investigation of bed morphological variations in channels with a group of parallel unequal spur dikes at various orientations

Author(s)

ABBASI SAEED | Pourshahbaz Hanif | Taghvai Pouria | Issue Writer Certificate

Keywords

erosionQ2

sedimentationQ2

group of spur dikesQ1

un-equal lengthQ1

numerical simulationQ1

Abstract

Spur dikes are structures which are constructed at an angle or perpendicular to flow to reduce flow velocity and bank erosion. As constricting structures, spur dikes narrow the flow channel and alter the flow structure in their vicinity, and develop vortices around the constricted region. In this paper the flow pattern alteration and bed morphological variation due to the various orientations of a group of parallel impermeable, non-submerged spur dikes having unequal lengths are numerically investigated. Numerical model validation is carried out utilizing experimental data. The results show that changing the orientation of spur dikes from 90° to 45° (reduction of channel width constriction by 12%), the maximum depth of scouring beneath the first spur dike is reduced by 50%.

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APA: Copy

ABBASI, SAEED, Pourshahbaz, Hanif, & Taghvai, Pouria. (2019). Investigation of bed morphological variations in channels with a group of parallel unequal spur dikes at various orientations. IRANIAN OF IRRIGATION & WATER ENGINEERING, 9(35 ), 38-48. SID. https://sid.ir/paper/247118/en

Vancouver: Copy

ABBASI SAEED, Pourshahbaz Hanif, Taghvai Pouria. Investigation of bed morphological variations in channels with a group of parallel unequal spur dikes at various orientations. IRANIAN OF IRRIGATION & WATER ENGINEERING[Internet]. 2019;9(35 ):38-48. Available from: https://sid.ir/paper/247118/en

IEEE: Copy

SAEED ABBASI, Hanif Pourshahbaz, and Pouria Taghvai, “Investigation of bed morphological variations in channels with a group of parallel unequal spur dikes at various orientations,” IRANIAN OF IRRIGATION & WATER ENGINEERING, vol. 9, no. 35 , pp. 38–48, 2019, [Online]. Available: https://sid.ir/paper/247118/en

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