[Forschungsseminar-BSV] Forschungsseminar Computergrafik, Bildverarbeitung und Visualisierung

[Vanessa Kretzschmar]

E I N L A D U N G

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zum Forschungsseminar 'Computergrafik, Bildverarbeitung und Visualisierung'

     am Mittwoch, den 22. Juni 2022, 13:15 Uhr,
     im Raum P-701 im Paulinum am Augustusplatz, sowie über eine 
Webkonferenz.
     (https://conf.fmi.uni-leipzig.de/b/van-bwb-jil-vk2)

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Wir hören einen Vortrag von

     Baldwin Nsonga

mit dem Titel:

     'Visual Analysis of the Impact of Periodic Wakes on the Pressure 
Side of a Turbine Blade'

zum Inhalt:

     Turbines are core components in jet engines for flight propulsion, 
power
     plants, and other important energy conversion processes. They are 
composed
     of successive rows of blades so that wakes of upstream blades reach
     subsequent blades where they perturb the flow in an unsteady manner. At
     the point where a wake reaches the downstream blades, the perturbation
     forms a so-called “negative jet”. In this work, we show that the 
negative
     jet partially fulfills the conditions of an anti-splat. Based on this
     finding, we enhance an anti-splat detection algorithm developed by the
     present authors in previous work and apply it to Direct Numerical
     Simulation data of a turbine cascade with unsteady wakes. This provides
     a sound framework, an objective criterion, and suitable visualization
     approaches to investigate the phenomenon even in very complex 
conditions,
     as is the alteration of the boundary layer flow along the pressure side
     of a turbine blade. The approach allows a very clear visualization of
     this interaction, which was not possible to evidence with previous
     methods, providing new insight into the physics of this flow. The use
     of flow paths shows up to which point wakes affect the boundary layer
     along the blade. The reported physical analysis, made possible by the
     proposed approach, demonstrates the usefulness of the method for the
     application domain. The generalization to flows in compressors, pumps,
     and blade-tower interaction in wind engineering and other fields is
     possible.

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Alle Interessierten sind im Namen von Professor Dr. Scheuermann herzlich
eingeladen.

Mit freundlichen Grüßen
Vanessa Kretzschmar
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