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Statements

Subject Item
n2:RIV%2F61388998%3A_____%2F11%3A00370298%21RIV12-AV0-61388998
rdf:type
n6:Vysledek skos:Concept
rdfs:seeAlso
http://iopscience.iop.org/1742-6596/318/6/062012?fromSearchPage=true
dcterms: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.
dcterms: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
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
skos:notation
RIV/61388998:_____/11:00370298!RIV12-AV0-61388998
n6:predkladatel
n13:ico%3A61388998
n4:aktivita
n16:Z
n4:aktivity
Z(AV0Z20760514)
n4:cisloPeriodika
-
n4:dodaniDat
n8:2012
n4:domaciTvurceVysledku
n9:5538408 n9:2634163 n9:8949573 n9:4644972 n9:6494315
n4:druhVysledku
n18:J
n4:duvernostUdaju
n15:S
n4:entitaPredkladatele
n19:predkladatel
n4:idSjednocenehoVysledku
191317
n4:idVysledku
RIV/61388998:_____/11:00370298
n4:jazykVysledku
n20:eng
n4:klicovaSlova
Wavelet analysis; street canyon; POD
n4:klicoveSlovo
n5:Wavelet%20analysis n5:POD n5:street%20canyon
n4:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n4:kontrolniKodProRIV
[F18A8C40F107]
n4:nazevZdroje
Journal of Physics, Conference Series
n4:obor
n10:DG
n4:pocetDomacichTvurcuVysledku
5
n4:pocetTvurcuVysledku
5
n4:rokUplatneniVysledku
n8:2011
n4:svazekPeriodika
318
n4:tvurceVysledku
Kellnerová, Radka Uruba, Václav Jurčáková, Klára Jaňour, Zbyněk Kukačka, Libor
n4:zamer
n14:AV0Z20760514
s:issn
1742-6596
s:numberOfPages
10
n17:doi
10.1088/1742-6596/318/6/062012