Best Installation Angle for Immersion Vanes as a Measure for Meander Bank Erosion

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Sozepoor A.; SHAFAI BEJESTAN M.

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Journal Paper

Paper Information

Journal: Ferdowsi Civil Engineering Year:2018 | Volume:31 | Issue:1 (21) Page(s): 31-44

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Information Journal Paper

Title

Best Installation Angle for Immersion Vanes as a Measure for Meander Bank Erosion

Author(s)

Sozepoor A. | SHAFAI BEJESTAN M. | Issue Writer Certificate

Keywords

Immersion VanesQ1

Installation AngleQ1

Physical ModelQ2

Bank ErosionQ1

Abstract

Developing three dimensional vortices at river meander causes severe erosion at the toe of the outer bank and deposition at the inner bank. The flow altering measures which have been presented so far are installed on the bed and are subject to failure due to progress of scour hole at their toe. Therefore in the present study the performance of Immersion Vanes, which are installed above the bed, are experimentally investigated. To reach such goal a movable Physical Model of 180 degree Karoon river bend was constructed. Different tests at Froude number equal to 0. 20 (=corresponded to the Karoon 2-years flood occurrence discharge) at six different vanes angles equal to 10, 20, 30, 40, 50, and 60 degrees was carried out. The general results show that the Immersion Vanes are effectively shifted the scour hole from the bank toe to the middle of the bend while no scour is observed at the base of the vanes. By comparing the bed topographic variations after tests it was found that at 40 degrees vane angle the toe scour hole is smaller and developed much farther from the outer bank compare to the other vane angles.

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APA: Copy

Sozepoor, A., & SHAFAI BEJESTAN, M.. (2018). Best Installation Angle for Immersion Vanes as a Measure for Meander Bank Erosion. JOURNAL OF CIVIL ENGINEERING (JOURNAL OF SCHOOL OF ENGINEERING), 31(1 (21) ), 31-44. SID. https://sid.ir/paper/195850/en

Vancouver: Copy

Sozepoor A., SHAFAI BEJESTAN M.. Best Installation Angle for Immersion Vanes as a Measure for Meander Bank Erosion. JOURNAL OF CIVIL ENGINEERING (JOURNAL OF SCHOOL OF ENGINEERING)[Internet]. 2018;31(1 (21) ):31-44. Available from: https://sid.ir/paper/195850/en

IEEE: Copy

A. Sozepoor, and M. SHAFAI BEJESTAN, “Best Installation Angle for Immersion Vanes as a Measure for Meander Bank Erosion,” JOURNAL OF CIVIL ENGINEERING (JOURNAL OF SCHOOL OF ENGINEERING), vol. 31, no. 1 (21) , pp. 31–44, 2018, [Online]. Available: https://sid.ir/paper/195850/en

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