Hydraulics of flow in gabion stepped spillways, an experimental study
In this study, the effect of different hydraulic parameters on the energy loss of flow over gabion stepped spillways are examined using physical models and comparisons are made with the other studies. Two end sills including rectangular and inclined shapes are used on each spillway step. The results...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Shahid Chamran University of Ahvaz
2023-07-01
|
| Series: | Journal of Hydraulic Structures |
| Subjects: | |
| Online Access: | https://jhs.scu.ac.ir/article_18429_2958e469bb54a581e7e23146b5fae1ee.pdf |
| _version_ | 1827644918260039680 |
|---|---|
| author | Farzin Salmasi Sina Razi John Abraham |
| author_facet | Farzin Salmasi Sina Razi John Abraham |
| author_sort | Farzin Salmasi |
| collection | DOAJ |
| description | In this study, the effect of different hydraulic parameters on the energy loss of flow over gabion stepped spillways are examined using physical models and comparisons are made with the other studies. Two end sills including rectangular and inclined shapes are used on each spillway step. The results showed that the influence of end sills in gabion stepped spillways with lower slopes is greater than that of spillways with higher slopes. The influence of end sills on energy loss in spillways with d50=40 mm and S = 1:2 is about 10% more than the spillways with d50=10 mm and S = 1:1 (d50 is the mean diameter of gravel in the gabion and S is the downstream slope of the gabion stepped spillways, vertical: horizontal). Energy dissipation in spillways with d50=10 mm and S = 1:2 is about 30 to 35 percent more than spillways with d50=10 mm and S = 1:1. Hence, end sills in spillways with gravel size of d50 = 10 mm have the most significant impact on the energy loss. Instead, the influence of the rectangular end sill on the energy loss is about 3-4% more than the effect of a triangular (inclined) end sill. |
| first_indexed | 2024-03-09T18:28:17Z |
| format | Article |
| id | doaj.art-613bd6ef901749938007337496bf1883 |
| institution | Directory Open Access Journal |
| issn | 2345-413X 2345-4156 |
| language | English |
| last_indexed | 2024-03-09T18:28:17Z |
| publishDate | 2023-07-01 |
| publisher | Shahid Chamran University of Ahvaz |
| record_format | Article |
| series | Journal of Hydraulic Structures |
| spelling | doaj.art-613bd6ef901749938007337496bf18832023-11-24T07:44:53ZengShahid Chamran University of AhvazJournal of Hydraulic Structures2345-413X2345-41562023-07-01927510010.22055/jhs.2023.40421.125718429Hydraulics of flow in gabion stepped spillways, an experimental studyFarzin Salmasi0Sina Razi1John Abraham2Department of Water Engineering, Faculty of Agriculture, University of Tabriz, Tabriz, Iran.Department of Water Engineering, Faculty of Agriculture, University of Tabriz, Tabriz, Iran.School of Engineering, University of St. Thomas, 2115 Summit Avenue St. Paul, Minnesota 55105, USA.In this study, the effect of different hydraulic parameters on the energy loss of flow over gabion stepped spillways are examined using physical models and comparisons are made with the other studies. Two end sills including rectangular and inclined shapes are used on each spillway step. The results showed that the influence of end sills in gabion stepped spillways with lower slopes is greater than that of spillways with higher slopes. The influence of end sills on energy loss in spillways with d50=40 mm and S = 1:2 is about 10% more than the spillways with d50=10 mm and S = 1:1 (d50 is the mean diameter of gravel in the gabion and S is the downstream slope of the gabion stepped spillways, vertical: horizontal). Energy dissipation in spillways with d50=10 mm and S = 1:2 is about 30 to 35 percent more than spillways with d50=10 mm and S = 1:1. Hence, end sills in spillways with gravel size of d50 = 10 mm have the most significant impact on the energy loss. Instead, the influence of the rectangular end sill on the energy loss is about 3-4% more than the effect of a triangular (inclined) end sill.https://jhs.scu.ac.ir/article_18429_2958e469bb54a581e7e23146b5fae1ee.pdfenergy lossgabioninclined end sillrectangular end sillstepped spillway |
| spellingShingle | Farzin Salmasi Sina Razi John Abraham Hydraulics of flow in gabion stepped spillways, an experimental study Journal of Hydraulic Structures energy loss gabion inclined end sill rectangular end sill stepped spillway |
| title | Hydraulics of flow in gabion stepped spillways, an experimental study |
| title_full | Hydraulics of flow in gabion stepped spillways, an experimental study |
| title_fullStr | Hydraulics of flow in gabion stepped spillways, an experimental study |
| title_full_unstemmed | Hydraulics of flow in gabion stepped spillways, an experimental study |
| title_short | Hydraulics of flow in gabion stepped spillways, an experimental study |
| title_sort | hydraulics of flow in gabion stepped spillways an experimental study |
| topic | energy loss gabion inclined end sill rectangular end sill stepped spillway |
| url | https://jhs.scu.ac.ir/article_18429_2958e469bb54a581e7e23146b5fae1ee.pdf |
| work_keys_str_mv | AT farzinsalmasi hydraulicsofflowingabionsteppedspillwaysanexperimentalstudy AT sinarazi hydraulicsofflowingabionsteppedspillwaysanexperimentalstudy AT johnabraham hydraulicsofflowingabionsteppedspillwaysanexperimentalstudy |