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dc.contributor.authorUruba, Václav
dc.contributor.authorProcházka, Pavel
dc.contributor.authorSedlář, Milan
dc.contributor.authorKomárek, Martin
dc.contributor.authorDuda, Daniel
dc.date.accessioned2023-02-27T11:00:22Z-
dc.date.available2023-02-27T11:00:22Z-
dc.date.issued2022
dc.identifier.citationURUBA, V. PROCHÁZKA, P. SEDLÁŘ, M. KOMÁREK, M. DUDA, D. Experimental and Numerical Study on Vortical Structures and Their Dynamics in a Pump Sump. Water, 2022, roč. 14, č. 13, s. 1-29. ISSN: 2073-4441cs
dc.identifier.issn2073-4441
dc.identifier.uri2-s2.0-85133277281
dc.identifier.urihttp://hdl.handle.net/11025/51597
dc.format29 s.cs
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherMDPIen
dc.relation.ispartofseriesWateren
dc.rights© authorsen
dc.titleExperimental and Numerical Study on Vortical Structures and Their Dynamics in a Pump Sumpen
dc.typečlánekcs
dc.typearticleen
dc.rights.accessopenAccessen
dc.type.versionpublishedVersionen
dc.description.abstract-translatedResearch on water flow in a pump inlet sump is presented. The main effort has been devoted to the study of the vortical structures’ appearance and their behavior. The study was conducted in a dedicated model of the pump sump consisting of a rectangular tank 1272 × 542 × 550 mm3 with a vertical bellmouth inlet 240 mm in diameter and a close-circuit water loop. Both Computational Fluid Dynamics (CFD) and experimental research methods have been applied. The advanced unsteady approach has been used for mathematical modeling to capture the flow-field dynamics. For experiments, the time-resolved Particle Image Velocimetry (PIV) method has been utilized. The mathematical modeling has been validated against the obtained experimental data; the main vortex core circulation is captured within 3%, while the overall flow topology is validated qualitatively. Three types of vortical structures have been detected: surface vortices, wall-attached vortices and bottom vortex. The most intense and stable is the bottom vortex; the surface and wall-attached vortices are found to be of random nature, both in their appearance and topology; they appear intermittently in time with various topologies. The dominant bottom vortex is relatively steady with weak, low-frequency dynamics; typical frequencies are up to 1 Hz. The origin of the vorticity of all large vortical structures is identified in the pump propeller rotation.en
dc.subject.translatedpump sumpen
dc.subject.translatedsuction pipeen
dc.subject.translatedvortical structureen
dc.subject.translatedparticle image velocimetryen
dc.subject.translatedmathematical modelingen
dc.identifier.doi10.3390/w14132039
dc.type.statusPeer-revieweden
dc.identifier.document-number824215700001
dc.identifier.obd43937465
dc.project.IDSGS-2022-023/Výzkum a vývoj energetických strojů a zařízenícs
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Články / Articles (CEV)
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