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Hybrid Modeling for Solutions of Sediment Deposition in a Low-Land Reservoir with Multigate Sluice Structure
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Strömningslära och experimentell mekanik.ORCID-id: 0000-0003-0820-617x
Vattenfall AB, R&D Hydraulic Laboratory, 81426 Älvkarleby, Sweden; Department of Civil and Architectural Engineering, Royal Institute of Technology, 10044 Stockholm, Sweden.ORCID-id: 0000-0002-4242-3824
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Strömningslära och experimentell mekanik.ORCID-id: 0000-0002-1033-0244
College of Water Conservancy and Hydropower Engineering, Hohai University, 210098 Nanjing, China.
2022 (engelsk)Inngår i: Applied Sciences, E-ISSN 2076-3417, Vol. 12, nr 18, artikkel-id 9144Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

At the multigate sluice structure on a fluvial river, undesired sediment deposition affects the normal operation of the reservoir in question. Physical and numerical models are hybridized to help explore flow and sedimentation patterns. Field and laboratory investigations show that the deposition is attributable to the formation of large recirculation zones at low and medium discharges. As a potential countermeasure, an array of guide vanes is recommended to cope with the concern. Their attack angle with the flow is a dominant parameter that needs to be evaluated. Tests in the fixed-bed model demonstrate that the vanes bend the reservoir flow towards the sluice and suppress the circulation zones along both banks. The favorable range of attack angle is 15–20°. With the examination of sedimentation of both bed and suspended loads, the numerical modeling indicates that the sediment-removal efficiency increases with an increase in attack angle. By weighing the flushing efficiency and the risk of local scouring at the vanes, the 15° vane layout is recommended. This study is expected to provide a reference for guide-vane design in similar situations.

sted, utgiver, år, opplag, sider
MDPI, 2022. Vol. 12, nr 18, artikkel-id 9144
Emneord [en]
multigate sluice, sediment deposition, physical model tests, numerical simulations, guide vanes
HSV kategori
Forskningsprogram
Strömningslära
Identifikatorer
URN: urn:nbn:se:ltu:diva-83923DOI: 10.3390/app12189144ISI: 000858024800001Scopus ID: 2-s2.0-85138618249OAI: oai:DiVA.org:ltu-83923DiVA, id: diva2:1595913
Forskningsfinansiär
StandUp, for Energy
Merknad

Validerad;2022;Nivå 2;2022-09-20 (sofila);

Funder: Chinese Scholarship Council (CSC), (201700260184)

Tilgjengelig fra: 2021-09-20 Laget: 2021-09-20 Sist oppdatert: 2022-11-08bibliografisk kontrollert

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Xie, QianchengLundström, Staffan

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