About: LDA measurements and turbulence spectral analysis in an agitated vessel

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	During the last years considerable improvement of the derivation of turbulence power spectrum from Laser Doppler Anemometry (LDA) has been achieved. The irregularly sampled LDA data is proposed to approximate by several methods e.g. Lomb-Scargle method, which estimates amplitude and phase of spectral lines from missing data, methods based on the reconstruction of the auto-correlation function (referred to as correlation slotting technique), methods based on the reconstruction of the time series using interpolation between the uneven sampling and subsequent resampling etc. These different methods were used on the LDA data measured in an agitated vessel and the results of the power spectrum calculations were compared. The measurements were performed in the mixing vessel with flat bottom. The vessel was equipped with four baffles and agitated with a six-blade pitched blade impeller. Three values of the impeller speed (Reynolds number) were tested. Long time series of the axial velocity component were measured in selected points. In each point the time series were analyzed and evaluated in a form of power spectrum. During the last years considerable improvement of the derivation of turbulence power spectrum from Laser Doppler Anemometry (LDA) has been achieved. The irregularly sampled LDA data is proposed to approximate by several methods e.g. Lomb-Scargle method, which estimates amplitude and phase of spectral lines from missing data, methods based on the reconstruction of the auto-correlation function (referred to as correlation slotting technique), methods based on the reconstruction of the time series using interpolation between the uneven sampling and subsequent resampling etc. These different methods were used on the LDA data measured in an agitated vessel and the results of the power spectrum calculations were compared. The measurements were performed in the mixing vessel with flat bottom. The vessel was equipped with four baffles and agitated with a six-blade pitched blade impeller. Three values of the impeller speed (Reynolds number) were tested. Long time series of the axial velocity component were measured in selected points. In each point the time series were analyzed and evaluated in a form of power spectrum. (en)
Title	LDA measurements and turbulence spectral analysis in an agitated vessel LDA measurements and turbulence spectral analysis in an agitated vessel (en)
skos:prefLabel	LDA measurements and turbulence spectral analysis in an agitated vessel LDA measurements and turbulence spectral analysis in an agitated vessel (en)
skos:notation	RIV/67985874:_____/12:00384046!RIV13-AV0-67985874
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GAP101/12/2274)
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Chára, Zdeněk Kysela, Bohuš Konfršt, Jiří
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav pro hydrodynamiku AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	146582
http://linked.open...ai/riv/idVysledku	RIV/67985874:_____/12:00384046
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	LDA/LDV; turbulence; mixing (en)
http://linked.open.../riv/klicoveSlovo	mixing turbulence LDA/LDV
http://linked.open...ontrolniKodProRIV	[BA04FB5C2DF4]
http://linked.open...v/mistoKonaniAkce	Hradec Králové
http://linked.open...i/riv/mistoVydani	Liberec
http://linked.open...i/riv/nazevZdroje	Experimental Fluid Mechanics 2012. Proceedings of the International Conference
http://linked.open...in/vavai/riv/obor	BK
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Local rate of turbulent energy dissipation in agitated reactors & bioreactors
http://linked.open...UplatneniVysledku	2012
http://linked.open...iv/tvurceVysledku	Chára, Zdeněk Kysela, Bohuš Konfršt, Jiří
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2012-11-20 (xsd:date)
number of pages	6 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Technická univerzita v Liberci
https://schema.org/isbn	978-80-7372-912-7

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