Počet záznamů: 1
Comparison of PIV and hot-wire statistics of turbulent boundary layer
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SYSNO ASEP 0437650 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Comparison of PIV and hot-wire statistics of turbulent boundary layer Tvůrce(i) Drózdz, A. (PL)
Uruba, Václav (UT-L) RID, ORCIDZdroj.dok. Journal of Physics: Conference Series, 1. - Bristol : Institute of Physics Publishing, 2014 - ISSN 1742-6588 Rozsah stran s. 012044-012044 Poč.str. 8 s. Forma vydání Tištěná - P Akce Fluid Mechanics Conference : FMC 2014 /21./ Datum konání 15.06.2014-18.06.2014 Místo konání Krakov Země PL - Polsko Typ akce WRD Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova turbulent boundary layer ; PIV ; hot wire Vědní obor RIV BK - Mechanika tekutin CEP GAP101/10/1230 GA ČR - Grantová agentura ČR 7AMB13PL003 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UT-L - RVO:61388998 UT WOS 000346742800044 EID SCOPUS 84906952881 DOI 10.1088/1742-6596/530/1/012044 Anotace The paper shows a cross checking of turbulent boundary layer measurements using large field of view PIV and hot-wire anemometry techniques. The time-resolved PIV method was used for the experiments. The measuring plane was oriented perpendicularly to the wall and parallel to the mean flow. Hot wire measurement has been performed using the special probe with perpendicular hot wire. The HW point measurements were performed in the same place as PIV experiments. The hot-wire probe has the wire length of l+ < 20 in considered range of Reynolds numbers. Various evaluation methods were applied on PIV data. The profiles of statistical characteristics of streamwise velocity components were evaluated from the data. Mean values, standard deviations as well as skewness and kurtosis coefficients were compared for a few values of Reθ. Reynolds number ranges from 1000 to 5500. The result shows that with the increasing Reynolds number the attenuation of fluctuations maximum in PIV measurements occurs with respect to Hot-Wire measurements, however representation of velocity fluctuations using the PIV method is satisfactory. The influence of wall-normal fluctuation component on Hot-Wire near wall peak was also investigated. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2015
Počet záznamů: 1