About: Comparison of wavelet analysis with velocity derivatives for detection of shear layer and vortices inside a turbulent boundary layer

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About: Comparison of wavelet analysis with velocity derivatives for detection of shear layer and vortices inside a turbulent boundary layer Goto Sponge NotDistinct Permalink

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Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://iopscience.iop.org/1742-6596/318/6/062012?fromSearchPage=true
Description	Detection of highly energetic structure in the turbulent flow can be easily done by wavelet analysis, especially with Morlet function as a mother wavelet for detection of repetitious low-frequency structures and Mexican hat for detection of vortices. Since wavelet analysis can be simply applied on one-point measurement, the better understanding of its meaning is welcome. In this project, turbulent boundary layer was investigated with focus on intermittent dynamics. PIV snapshot were used for comparison with Wavelet analysis results, since PIV was performed with high sample frequency (500 Hz). Instantaneous snapshots of velocity and vorticity were studied also by POD and spectra of particular expansion coefficients were computed. Vorticity from planar velocity vectors was used as a suitable methods for recognition of strongly deformed streamlines. Detection of highly energetic structure in the turbulent flow can be easily done by wavelet analysis, especially with Morlet function as a mother wavelet for detection of repetitious low-frequency structures and Mexican hat for detection of vortices. Since wavelet analysis can be simply applied on one-point measurement, the better understanding of its meaning is welcome. In this project, turbulent boundary layer was investigated with focus on intermittent dynamics. PIV snapshot were used for comparison with Wavelet analysis results, since PIV was performed with high sample frequency (500 Hz). Instantaneous snapshots of velocity and vorticity were studied also by POD and spectra of particular expansion coefficients were computed. Vorticity from planar velocity vectors was used as a suitable methods for recognition of strongly deformed streamlines. (en)
Title	Comparison of wavelet analysis with velocity derivatives for detection of shear layer and vortices inside a turbulent boundary layer Comparison of wavelet analysis with velocity derivatives for detection of shear layer and vortices inside a turbulent boundary layer (en)
skos:prefLabel	Comparison of wavelet analysis with velocity derivatives for detection of shear layer and vortices inside a turbulent boundary layer Comparison of wavelet analysis with velocity derivatives for detection of shear layer and vortices inside a turbulent boundary layer (en)
skos:notation	RIV/61388998:_____/11:00370298!RIV12-AV0-61388998
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(AV0Z20760514)
http://linked.open...iv/cisloPeriodika	-
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Kukačka, Libor Kellnerová, Radka Jaňour, Zbyněk Uruba, Václav Jurčáková, Klára
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav termomechaniky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	191317
http://linked.open...ai/riv/idVysledku	RIV/61388998:_____/11:00370298
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Wavelet analysis; street canyon; POD (en)
http://linked.open.../riv/klicoveSlovo	POD Wavelet analysis street canyon
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[F18A8C40F107]
http://linked.open...i/riv/nazevZdroje	Journal of Physics, Conference Series
http://linked.open...in/vavai/riv/obor	DG
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	318
http://linked.open...iv/tvurceVysledku	Jaňour, Zbyněk Jurčáková, Klára Kellnerová, Radka Kukačka, Libor Uruba, Václav
http://linked.open...n/vavai/riv/zamer	Complex dynamical systems in thermodynamics, fluid and solid mechanics
issn	1742-6596
number of pages	10 (xsd:int)
http://bibframe.org/vocab/doi	10.1088/1742-6596/318/6/062012

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