Počet záznamů: 1
Experimental Investigation of the Unsteady Stator/Rotor Wake Characteristics Downstream of an Axial Air Turbine
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SYSNO ASEP 0545831 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Experimental Investigation of the Unsteady Stator/Rotor Wake Characteristics Downstream of an Axial Air Turbine Tvůrce(i) Duda, D. (CZ)
Jelínek, T. (CZ)
Milčák, P. (CZ)
Němec, M. (CZ)
Uruba, Václav (UT-L) RID, ORCID
Yanovych, Vitalii (UT-L)
Žitek, P. (CZ)Číslo článku 22 Zdroj.dok. International Journal of Turbomachinery, Propulsion and Power. - : MDPI
Roč. 6, č. 3 (2021)Poč.str. 23 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova Particle Image Velocimetry ; turbine ; turbine test facility ; length-scale ; turbomachinery ; wake Obor OECD Applied mechanics CEP TN01000007 GA TA ČR - Technologická agentura ČR Způsob publikování Open access Institucionální podpora UT-L - RVO:61388998 UT WOS 000700698300001 EID SCOPUS 85110477662 DOI 10.3390/ijtpp6030022 Anotace A feasibility study of velocity field measurements using the Particle Image Velocimetry (PIV) method in an axial air turbine model is presented. The wakes past the blades of the rotor wheel were observed using the PIV technique. Data acquisition was synchronized with the shaft rotation, thus, the wakes were phase averaged for statistical analysis. The interaction of the rotor blade wakes with the stator ones was investigated by changing the stator wheel’s angle. The measurement planes were located just behind the rotor blades, covering approximately 3 cm x 3 cm in axial x tangential directions. The spatial correlation function suggests that the resolution used is sufficient for the large-scale flow-patterns only, but not for the small ones. The scales of fluctuations correspond to the shear layer thickness at the mid-span plane but, close to the end-wall, they contain larger structures caused by the secondary flows. The length-scales of the fluctuations under off-design conditions display a dependence on the area of the stator and rotor wakes cross-sections, which, in turn, depend on their angle. The obtained experimental data are to be used for the validation of mathematical simulation results in the future. 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 2022 Elektronická adresa https://www.mdpi.com/2504-186X/6/3/22/htm
Počet záznamů: 1