Effect of same phase hydraulic jet on reduction of scour in 180-degree bend

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Tamoradi Zeinab; AHADIYAN JAVAD; Najarchi Mohsen; Hasounizadeh Houshang; Najafizadeh Mohammad Mahdi

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Journal: JOURNAL OF HYDRAULICS Year:2019 | Volume:13 | Issue:4 (134) Page(s): 57-68

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Title

Effect of same phase hydraulic jet on reduction of scour in 180-degree bend

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Keywords

Same phase hydraulic jetQ1

River bendsQ1

Scour depthQ1

Abstract

This study is an attempt to investigate the effects of the same-phase hydraulic jet on the scour reduction at a river bend. In this method, a perforated open-ended tube was placed along the bed of abend and water was injected into the bend flow from both ends of this tube. The goal was to form a water screen against secondary flows so as to prevent them from reaching the outer bank of the river. Results showed a change in the maximum point of the Scour depth from the outer wall to the middle parts of the cross section in the main experiments. On the other hand, as the tube ports were further spaced, a reduction occurred in the maximum point of the Scour depth. Moreover, with the reduction in the tube distance from the outer wall of the bend, the maximum Scour depth decreased. Based on the results, the maximum Scour depth at the bend sections of 90, 130 and 175 degrees reduced by 60%, 64%, and 87%, respectively.

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APA: Copy

Tamoradi, Zeinab, AHADIYAN, JAVAD, Najarchi, Mohsen, Hasounizadeh, Houshang, & Najafizadeh, Mohammad Mahdi. (2019). Effect of same phase hydraulic jet on reduction of scour in 180-degree bend. JOURNAL OF HYDRAULICS, 13(4 (134) ), 57-68. SID. https://sid.ir/paper/124239/en

Vancouver: Copy

Tamoradi Zeinab, AHADIYAN JAVAD, Najarchi Mohsen, Hasounizadeh Houshang, Najafizadeh Mohammad Mahdi. Effect of same phase hydraulic jet on reduction of scour in 180-degree bend. JOURNAL OF HYDRAULICS[Internet]. 2019;13(4 (134) ):57-68. Available from: https://sid.ir/paper/124239/en

IEEE: Copy

Zeinab Tamoradi, JAVAD AHADIYAN, Mohsen Najarchi, Houshang Hasounizadeh, and Mohammad Mahdi Najafizadeh, “Effect of same phase hydraulic jet on reduction of scour in 180-degree bend,” JOURNAL OF HYDRAULICS, vol. 13, no. 4 (134) , pp. 57–68, 2019, [Online]. Available: https://sid.ir/paper/124239/en

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