Experimental Analysis of Scour Features at Chevrons in Straight Channel
Eco-friendly river restoration structures are used to create localized scour pools which serve as fish nurseries and promote biodiversity. In this category, chevrons are relatively new structures designed to maintain navigability in rivers. The scour hole formed in the wake region of chevrons can ei...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-04-01
|
| Series: | Water |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4441/13/7/971 |
| _version_ | 1797539252070776832 |
|---|---|
| author | Deep Roy Simone Pagliara Michele Palermo |
| author_facet | Deep Roy Simone Pagliara Michele Palermo |
| author_sort | Deep Roy |
| collection | DOAJ |
| description | Eco-friendly river restoration structures are used to create localized scour pools which serve as fish nurseries and promote biodiversity. In this category, chevrons are relatively new structures designed to maintain navigability in rivers. The scour hole formed in the wake region of chevrons can either act as a disposal site for dredged material or as a resting spot for different fish species. However, only few studies are present in the literature dealing with the scour mechanism due to chevrons. Therefore, this work aims to analyze the scour features at equilibrium, under different hydraulic conditions and transversal locations in a straight channel. Tests were conducted with both isolated and multiple chevrons in series arrangement. Scour morphology types were classified and their fields of existence were established as well. A detailed dimensional analysis was conducted, allowing us to identify the main parameters governing the scour phenomenon and derive a novel equivalent densimetric Froude number. Finally, empirical equations were developed to predict the maximum scour depth and length as well as the maximum dune height. |
| first_indexed | 2024-03-10T12:42:23Z |
| format | Article |
| id | doaj.art-369cb36ba441469ea4f8d27c25052fc1 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T12:42:23Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-369cb36ba441469ea4f8d27c25052fc12023-11-21T13:43:24ZengMDPI AGWater2073-44412021-04-0113797110.3390/w13070971Experimental Analysis of Scour Features at Chevrons in Straight ChannelDeep Roy0Simone Pagliara1Michele Palermo2Department of Energy, Systems, Territory and Construction Engineering, University of Pisa, 56122 Pisa, ItalyDepartment of Civil and Environmental Engineering, Imperial College London, South Kensington, London SW7 2AZ, UKDepartment of Energy, Systems, Territory and Construction Engineering, University of Pisa, 56122 Pisa, ItalyEco-friendly river restoration structures are used to create localized scour pools which serve as fish nurseries and promote biodiversity. In this category, chevrons are relatively new structures designed to maintain navigability in rivers. The scour hole formed in the wake region of chevrons can either act as a disposal site for dredged material or as a resting spot for different fish species. However, only few studies are present in the literature dealing with the scour mechanism due to chevrons. Therefore, this work aims to analyze the scour features at equilibrium, under different hydraulic conditions and transversal locations in a straight channel. Tests were conducted with both isolated and multiple chevrons in series arrangement. Scour morphology types were classified and their fields of existence were established as well. A detailed dimensional analysis was conducted, allowing us to identify the main parameters governing the scour phenomenon and derive a novel equivalent densimetric Froude number. Finally, empirical equations were developed to predict the maximum scour depth and length as well as the maximum dune height.https://www.mdpi.com/2073-4441/13/7/971chevronhydraulicsphysical modelriver restorationscour morphology |
| spellingShingle | Deep Roy Simone Pagliara Michele Palermo Experimental Analysis of Scour Features at Chevrons in Straight Channel Water chevron hydraulics physical model river restoration scour morphology |
| title | Experimental Analysis of Scour Features at Chevrons in Straight Channel |
| title_full | Experimental Analysis of Scour Features at Chevrons in Straight Channel |
| title_fullStr | Experimental Analysis of Scour Features at Chevrons in Straight Channel |
| title_full_unstemmed | Experimental Analysis of Scour Features at Chevrons in Straight Channel |
| title_short | Experimental Analysis of Scour Features at Chevrons in Straight Channel |
| title_sort | experimental analysis of scour features at chevrons in straight channel |
| topic | chevron hydraulics physical model river restoration scour morphology |
| url | https://www.mdpi.com/2073-4441/13/7/971 |
| work_keys_str_mv | AT deeproy experimentalanalysisofscourfeaturesatchevronsinstraightchannel AT simonepagliara experimentalanalysisofscourfeaturesatchevronsinstraightchannel AT michelepalermo experimentalanalysisofscourfeaturesatchevronsinstraightchannel |