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Wakes and secondary structures past stator wheel in test turbine VT-400 observed by PIV

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    SYSNO ASEP0582351
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleWakes and secondary structures past stator wheel in test turbine VT-400 observed by PIV
    Author(s) Duda, D. (CZ)
    Klimko, M. (CZ)
    Milčák, P. (CZ)
    Jeřábek, M. (CZ)
    Uruba, Václav (UT-L) RID, ORCID
    Yanovych, V. (CZ)
    Žitek, P. (CZ)
    Source TitleEuropean Journal of Mechanics B-Fluids. - : Elsevier - ISSN 0997-7546
    Roč. 105, May-June (2024), s. 151-163
    Number of pages13 s.
    Publication formPrint - P
    Languageeng - English
    CountryNL - Netherlands
    KeywordsParticle image velocimetry ; Turbine ; Secondary vortices ; Stator wake ; Vortex identification algorithm
    Subject RIVBK - Fluid Dynamics
    OECD categoryApplied mechanics
    Method of publishingOpen access
    Institutional supportUT-L - RVO:61388998
    UT WOS001172246600001
    EID SCOPUS85183457748
    DOI10.1016/j.euromechflu.2024.01.008
    AnnotationFlow inside the axial test turbine VT-400 is measured by using a standard methodology of Particle Image Velocimetry (PIV). The studied area lies between the stator and rotor wheel in meridional plane. This area covers both: the regular flow near hub and the endwall secondary structures as well. Regular structure of wakes and jets past stator blades is observed in terms of mean velocities and turbulence intensity. The fluctuations are close to isotropy and the energy distribution across length-scales exhibits almost Kolmogorov scaling. Near the hub, we observe secondary vortices. Despite the positive radial ejections in that regions, these secondary vortices drift towards the hub, they dissipate energy and circulation and their core grows in size. © 2024 The Authors
    WorkplaceInstitute of Thermomechanics
    ContactMarie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823
    Year of Publishing2025
    Electronic addresshttps://www.sciencedirect.com/science/article/pii/S0997754624000165?dgcid=rss_sd_all
Number of the records: 1  

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