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Measurements and Simulations of the Flow Distribution in a Down-Scaled Multiple Outlet Spillway with Complex Channel
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0002-0613-5294
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0002-8360-9051
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0001-9789-6293
Vattenfall, Research & Development Hydraulic Laboratory, Älvkarleby, 814 26, Sweden; Wildlife, Fish and Environmental Studies, Swedish University of Agricultural Sciences, Umeå, 901 83, Sweden.
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2024 (English)In: Water, E-ISSN 2073-4441, Vol. 16, no 6, article id 871Article in journal (Refereed) Published
Abstract [en]

Measurements of mass flow through a three-outlet spillway modeled after a scaled-down spillway were conducted. The inlet and channel leading up to the outlets were placed to lead the water toward the outlet at an angle. With this, measurements of the water level at three locations were recorded by magnetostrictive sensors. The volumetric flow rates for each individual outlet were recorded separately to study the differences between them. Additionally, Acoustic Doppler Velocimetry was used to measure water velocities close to the outlets. The conditions changed were the inlet volume flow rate and the flow distribution was measured at 90, 100, 110, and 200 L per second. Differences between the outlets were mostly within the error margin of the instruments used in the experiments with larger differences shown for the 200 L test. The results produced together with a CAD model of the setup can be used for verification of CFD methods. A simulation with the k-epsilon turbulence model is included and compared to earlier experiments and the new experimental results. Larger differences are seen in the new experiments. Differing inlet conditions are assumed as the principal cause for the differences seen.

Place, publisher, year, edition, pages
Multidisciplinary Digital Publishing Institute (MDPI) , 2024. Vol. 16, no 6, article id 871
Keywords [en]
CFD, experiment, open channel, spillway, surface flow
National Category
Fluid Mechanics and Acoustics
Research subject
Fluid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-105007DOI: 10.3390/w16060871ISI: 001192727300001Scopus ID: 2-s2.0-85188995072OAI: oai:DiVA.org:ltu-105007DiVA, id: diva2:1849483
Note

Validerad;2024;Nivå 2;2024-04-08 (marisr);

Full text license: CC BY

Available from: 2024-04-08 Created: 2024-04-08 Last updated: 2024-04-08Bibliographically approved

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Hedberg, P. A. MikaelHellström, J. Gunnar I.Andersson, Anders G.Andersson, Robin L.

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