Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/59648

TitleEffect of the ski jump bucket angle on the scour hole downstream of a converging stepped spillway
Author(s)Sá Machado, L.
Lima, M. M. C. L.
Aleixo, R.
Carvalho, E.
KeywordsEnergy dissipation
scour hole
ski jump bucket
stepped spillway
Issue dateFeb-2019
PublisherTaylor & Francis
JournalInternational Journal of River Basin Management
CitationSá Machado L., Lima M. M. C. L., Aleixo R., Carvalho E. Effect of the ski jump bucket angle on the scour hole downstream of a converging stepped spillway, International Journal of River Basin Management, doi:10.1080/15715124.2019.1586717, 2019
Abstract(s)The present study is devoted to the analysis of scour downstream of a converging stepped spillway equipped with a ski jump bucket. The energy dissipated by jets leaving the spillway can be divided in two parts: one is the kinetic energy dissipated along the jet trajectory and another one is the energy dissipated on the impact with the tailwater. Due to the jet impact, the riverbed is subjected to turbulent pressure fluctuations resulting in the formation of a scour hole. Different experimental conditions allowed to analyse the influence of different variables on the configuration of the loose bed scour, namely: the tailwater depth, the flow rate and the exit angle of the ski jump bucket. The results were compared to those presented by other authors. For some specific flow conditions, the 3D configuration of the scour hole was also determined.
TypeArticle
URIhttp://hdl.handle.net/1822/59648
DOI10.1080/15715124.2019.1586717
ISSN1571-5124
e-ISSN1814-2060
Publisher versionhttps://www.tandfonline.com/loi/trbm20
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:C-TAC - Artigos em Revistas Internacionais

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