Experimental investigation on the effect of curvature of bend on bed topography in 90 degree bend

Rivers are main sources of water supply. Recognition of   rivers behavior and their changes, particularly in Curved channels, is critical. In this paper, results of experiments on scour pattern in a 90 degree bend are discussed.  Experiments have been carried out in a channel with three different ra...

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Bibliographic Details
Main Authors: Mohammad Vaghefi, Masoud Ghodsian
Format: Article
Language:fas
Published: Shahid Chamran University of Ahvaz 2010-10-01
Series:علوم و مهندسی آبیاری
Subjects:
Online Access:http://jise.scu.ac.ir/article_13482_8df123cfb57573fa5f8ce2d482911051.pdf
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spelling doaj-c5a5852c63634e01b7cd27c524e0c4c42020-11-25T03:04:28ZfasShahid Chamran University of Ahvazعلوم و مهندسی آبیاری2588-59522588-59602010-10-013329311210.22055/jise.2010.1348213482Experimental investigation on the effect of curvature of bend on bed topography in 90 degree bendMohammad Vaghefi0Masoud Ghodsian1Assistant Professor, Department of Civil Engineering, Persian Gulf University, Bushehr,IranProfessor, Water Engineering Research Center, Tarbiat Modares University, Tehran, IranRivers are main sources of water supply. Recognition of   rivers behavior and their changes, particularly in Curved channels, is critical. In this paper, results of experiments on scour pattern in a 90 degree bend are discussed.  Experiments have been carried out in a channel with three different radiuses of curvatures, including mild, moderate and steep. Bed topography has been measured by Laser Bed Profiler. Comparison between different lateral sections, longitudinal sections and bed topography has been made and scouring pattern is analyzed. The results indicate that reduction of radius of curvature of the bend leads to increase of bed topography changes and sedimentation and scouring rates. Also, scour can be seen along downstream straight channel and near the outer bank; however, this is more evident in the steeper bend.http://jise.scu.ac.ir/article_13482_8df123cfb57573fa5f8ce2d482911051.pdfscour pattern90 degree bendbed topographyradius of curvature
collection DOAJ
language fas
format Article
sources DOAJ
author Mohammad Vaghefi
Masoud Ghodsian
spellingShingle Mohammad Vaghefi
Masoud Ghodsian
Experimental investigation on the effect of curvature of bend on bed topography in 90 degree bend
علوم و مهندسی آبیاری
scour pattern
90 degree bend
bed topography
radius of curvature
author_facet Mohammad Vaghefi
Masoud Ghodsian
author_sort Mohammad Vaghefi
title Experimental investigation on the effect of curvature of bend on bed topography in 90 degree bend
title_short Experimental investigation on the effect of curvature of bend on bed topography in 90 degree bend
title_full Experimental investigation on the effect of curvature of bend on bed topography in 90 degree bend
title_fullStr Experimental investigation on the effect of curvature of bend on bed topography in 90 degree bend
title_full_unstemmed Experimental investigation on the effect of curvature of bend on bed topography in 90 degree bend
title_sort experimental investigation on the effect of curvature of bend on bed topography in 90 degree bend
publisher Shahid Chamran University of Ahvaz
series علوم و مهندسی آبیاری
issn 2588-5952
2588-5960
publishDate 2010-10-01
description Rivers are main sources of water supply. Recognition of   rivers behavior and their changes, particularly in Curved channels, is critical. In this paper, results of experiments on scour pattern in a 90 degree bend are discussed.  Experiments have been carried out in a channel with three different radiuses of curvatures, including mild, moderate and steep. Bed topography has been measured by Laser Bed Profiler. Comparison between different lateral sections, longitudinal sections and bed topography has been made and scouring pattern is analyzed. The results indicate that reduction of radius of curvature of the bend leads to increase of bed topography changes and sedimentation and scouring rates. Also, scour can be seen along downstream straight channel and near the outer bank; however, this is more evident in the steeper bend.
topic scour pattern
90 degree bend
bed topography
radius of curvature
url http://jise.scu.ac.ir/article_13482_8df123cfb57573fa5f8ce2d482911051.pdf
work_keys_str_mv AT mohammadvaghefi experimentalinvestigationontheeffectofcurvatureofbendonbedtopographyin90degreebend
AT masoudghodsian experimentalinvestigationontheeffectofcurvatureofbendonbedtopographyin90degreebend
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