Flow characteristics at trapezoidal broad-crested side weir
Broad-crested side weirs have been the subject of numerous hydraulic studies; however, the flow field at the weir crest and in front of the weir in the approach channel still has not been fully described. Also, the discharge coefficient of broad-crested side weirs, whether slightly inclined towards...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Sciendo
2015-06-01
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| Series: | Journal of Hydrology and Hydromechanics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/johh-2015-0026 |
| _version_ | 1818384106544693248 |
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| author | Říha Jaromír Zachoval Zbyněk |
| author_facet | Říha Jaromír Zachoval Zbyněk |
| author_sort | Říha Jaromír |
| collection | DOAJ |
| description | Broad-crested side weirs have been the subject of numerous hydraulic studies; however, the flow field at the weir crest and in front of the weir in the approach channel still has not been fully described. Also, the discharge coefficient of broad-crested side weirs, whether slightly inclined towards the stream or lateral, still has yet to be clearly determined. Experimental research was carried out to describe the flow characteristics at low Froude numbers in the approach flow channel for various combinations of in- and overflow discharges. Three side weir types with different oblique angles were studied. Their flow characteristics and discharge coefficients were analyzed and assessed based on the results obtained from extensive measurements performed on a hydraulic model. The empirical relation between the angle of side weir obliqueness, Froude numbers in the up- and downstream channels, and the coefficient of obliqueness was derived. |
| first_indexed | 2024-12-14T03:16:59Z |
| format | Article |
| id | doaj.art-089a9e3ceaee487ca74cdcbe90effad2 |
| institution | Directory Open Access Journal |
| issn | 0042-790X |
| language | English |
| last_indexed | 2024-12-14T03:16:59Z |
| publishDate | 2015-06-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Journal of Hydrology and Hydromechanics |
| spelling | doaj.art-089a9e3ceaee487ca74cdcbe90effad22022-12-21T23:19:07ZengSciendoJournal of Hydrology and Hydromechanics0042-790X2015-06-0163216417110.1515/johh-2015-0026johh-2015-0026Flow characteristics at trapezoidal broad-crested side weirŘíha Jaromír0Zachoval Zbyněk1Brno University of Technology, Faculty of Civil Engineering, Institute of Water Structures, Veveří 331/95, 602 00 Brno, Czech RepublicBrno University of Technology, Faculty of Civil Engineering, Institute of Water Structures, Veveří 331/95, 602 00 Brno, Czech RepublicBroad-crested side weirs have been the subject of numerous hydraulic studies; however, the flow field at the weir crest and in front of the weir in the approach channel still has not been fully described. Also, the discharge coefficient of broad-crested side weirs, whether slightly inclined towards the stream or lateral, still has yet to be clearly determined. Experimental research was carried out to describe the flow characteristics at low Froude numbers in the approach flow channel for various combinations of in- and overflow discharges. Three side weir types with different oblique angles were studied. Their flow characteristics and discharge coefficients were analyzed and assessed based on the results obtained from extensive measurements performed on a hydraulic model. The empirical relation between the angle of side weir obliqueness, Froude numbers in the up- and downstream channels, and the coefficient of obliqueness was derived.https://doi.org/10.1515/johh-2015-0026broad-crested side weirexperimental researchflow characteristicshydraulics |
| spellingShingle | Říha Jaromír Zachoval Zbyněk Flow characteristics at trapezoidal broad-crested side weir Journal of Hydrology and Hydromechanics broad-crested side weir experimental research flow characteristics hydraulics |
| title | Flow characteristics at trapezoidal broad-crested side weir |
| title_full | Flow characteristics at trapezoidal broad-crested side weir |
| title_fullStr | Flow characteristics at trapezoidal broad-crested side weir |
| title_full_unstemmed | Flow characteristics at trapezoidal broad-crested side weir |
| title_short | Flow characteristics at trapezoidal broad-crested side weir |
| title_sort | flow characteristics at trapezoidal broad crested side weir |
| topic | broad-crested side weir experimental research flow characteristics hydraulics |
| url | https://doi.org/10.1515/johh-2015-0026 |
| work_keys_str_mv | AT rihajaromir flowcharacteristicsattrapezoidalbroadcrestedsideweir AT zachovalzbynek flowcharacteristicsattrapezoidalbroadcrestedsideweir |