Visualisation of hairpin vortex packets in the near-ground atmospheric boundary layer during daytime

dc.contributor.authorCho, Moonsung
dc.date.accessioned2020-05-14T09:30:15Z
dc.date.available2020-05-14T09:30:15Z
dc.date.issued2020-01-14
dc.description.abstractVisualisation of the flow structure near the ground is important to understand aerial locomotion of a passive flying animal. The video shows the visualized structures of several hairpin vortex packets in the near ground atmospheric boundary layer during daytime. The hairpin vortex packets appear as a wedge-like shape. The structure develops upwards, as it drifts in the downwind direction. (Mean wind speed: 1.96 m/s at 0.95 m above the ground) These packet structures can be used by passive flyers, such as spiders, for their aerial dispersal during their take-off phase. The image processing technique has been applied. The faint smokes are recognized by comparing the RGB vectors with that of the background and amplified. The recognized smokes are negatively visualized as the color of white.en
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/10603
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-9529
dc.language.isoenen
dc.relation.issupplementtohttp://dx.doi.org/10.14279/depositonce-9538
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subject.ddc551 Geologie, Hydrologie, Meteorologiede
dc.subject.otherhairpin vortex packeten
dc.subject.otheratmospheric boundary layeren
dc.subject.othercoherent structureen
dc.subject.otherflow visualizationen
dc.subject.otherhairpin vortexen
dc.subject.otherfiber dynamicsen
dc.subject.otherturbulenceen
dc.subject.otheraerial dispersalen
dc.subject.otherlow Reynolds number flowen
dc.subject.otherKnudsen numberen
dc.subject.otheratmosphärische Grenzschichtde
dc.subject.otherkohärente Strukturde
dc.subject.otherFadendynamikde
dc.subject.otherTurbulenzde
dc.subject.otherLuftverbreitungde
dc.subject.otherStrömung mit kleiner Reynolds-Zahlde
dc.subject.otherKnudsen-Zahlde
dc.titleVisualisation of hairpin vortex packets in the near-ground atmospheric boundary layer during daytimeen
dc.typeVideoen
tub.accessrights.dnbfree*
tub.affiliationFak. 3 Prozesswissenschaften>Inst. Biotechnologie>FG Bioverfahrenstechnikde
tub.affiliation.facultyFak. 3 Prozesswissenschaftende
tub.affiliation.groupFG Bioverfahrenstechnikde
tub.affiliation.instituteInst. Biotechnologiede
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Visualization of hairpin vortex packets in the near-ground atmospheric boundary layer during daytime
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