Numerical Investigation of the Effect of Groins and Bendway Weirs on Flow and Sediment Pattern Using Mike 3 Flow Model FM

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Bigdeli Tabar Sahreini h.; HEMMATI M.; AHMADI H.; Naderkhanloo v.

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Paper Information

Journal: WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE) Year:2018 | Volume:28 | Issue:1 Page(s): 159-171

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Title

Numerical Investigation of the Effect of Groins and Bendway Weirs on Flow and Sediment Pattern Using Mike 3 Flow Model FM

Author(s)

Bigdeli Tabar Sahreini h. | HEMMATI M. | AHMADI H. | Naderkhanloo v. | Issue Writer Certificate

Keywords

Bendway weirsQ2

GroynesQ2

Numerical simulationQ2

Scour controlQ2

ScouringQ2

Abstract

Bendway weirs are important multi-purpose structures for erosion control and are implemented to control erosion, restore streams, and improve habitat. Investigation of the effect of weirs’ s height on flow pattern and erosion and sedimentation by application Mike 3 Flow Model FM was the aim of this research. The used variables were three flow discharge rates of 120, 150 and 180 (l/s), three weir heights of 0. 5y, 0. 7y (submerge weirs) and 1. 2y (spur) (y is the mean water depth). The length ratio (L/B) was kept constant during experiments (equal to 3 times of water surface width) as well, weir crest slope (flat crest) and weirs angle (60 degree) were also constant. The results showed that the maximum difference between experimental and simulation data of the maximum scour depth at the tip of weirs was about 7. 6 %. So a good agreement was found between the model and experimental results. Furthermore, the results revealed that the Bendway weirs were more efficient than groins in reducing the velocity magnitude, decreasing the scour at the outer bank side and in decreasing the sediment deposition at the inner bank side. On average, the velocity magnitude at the outer bank side decreased by 81, 85 and 70 % in weirs with heights of 0. 3y, 0. 7y and 1. 2y, respectively. Generally, the results of this research showed that the weirs with a height of 0. 7y had the most influence on protection of outer bank.

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APA: Copy

Bigdeli Tabar Sahreini, h., HEMMATI, M., AHMADI, H., & Naderkhanloo, v.. (2018). Numerical Investigation of the Effect of Groins and Bendway Weirs on Flow and Sediment Pattern Using Mike 3 Flow Model FM. WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE), 28(1 ), 159-171. SID. https://sid.ir/paper/147712/en

Vancouver: Copy

Bigdeli Tabar Sahreini h., HEMMATI M., AHMADI H., Naderkhanloo v.. Numerical Investigation of the Effect of Groins and Bendway Weirs on Flow and Sediment Pattern Using Mike 3 Flow Model FM. WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE)[Internet]. 2018;28(1 ):159-171. Available from: https://sid.ir/paper/147712/en

IEEE: Copy

h. Bigdeli Tabar Sahreini, M. HEMMATI, H. AHMADI, and v. Naderkhanloo, “Numerical Investigation of the Effect of Groins and Bendway Weirs on Flow and Sediment Pattern Using Mike 3 Flow Model FM,” WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE), vol. 28, no. 1 , pp. 159–171, 2018, [Online]. Available: https://sid.ir/paper/147712/en

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