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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Shahid Chamran University of Ahvaz
2010-10-01
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Online Access: | http://jise.scu.ac.ir/article_13482_8df123cfb57573fa5f8ce2d482911051.pdf |
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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 |
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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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