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VISUALIZATION OF UNSTEADY FLOW AROUND A VIBRATING PROFILE: EXPERIMENTAL SET-UP AND PRELIMINARY TESTS
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SYSNO ASEP 0332394 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title VISUALIZATION OF UNSTEADY FLOW AROUND A VIBRATING PROFILE: EXPERIMENTAL SET-UP AND PRELIMINARY TESTS Title Zviditelnění nestacionárního proudění kolem vibrujícího profilu: Experimentální uspořádání a předběžné testy Author(s) Vlček, Václav (UT-L) RID
Horáček, Jaromír (UT-L) RID, ORCID
Luxa, Martin (UT-L) RID, ORCID
Veselý, Jan (UT-L)
Bula, Vítězslav (UT-L) RIDSource Title Proceedings Interaction and Feedbacks 2009. - Praha : Ústav termomechaniky AV ČR, v. v. i., 2009 / Zolotarev I. - ISBN 978-80-87012-23-9 Pages s. 75-83 Number of pages 9 s. Action Interaction and Feedbacks 2009 Event date 24.11.2009-25.11.2009 VEvent location Praha Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords aeroelasticity ; flutter ; optical measurement Subject RIV BI - Acoustics R&D Projects GA101/09/1522 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20760514 - UT-L (2005-2011) Annotation The contribution presents the designed aeroelastic model, experimental set-up and preliminary tests of optical measurements of flow field around a vibrating NACA 0017 profile elastically supported in the measurement section of the wind tunnel. The profile can vibrate with two degrees of freedom for translation and rotation. The interferometry method combined with the high speed filming was used for flow visualization of in different phases of the profile motion. The measurements were performed in a subsonic wind tunnel above the airflow velocity for loss of the system stability by flutter, thus the vibration amplitudes were relatively large up to about 7 mm for vertical translation and 16.5 degrees for angle of rotation around the elastic axis. The 52 images of the flow field were recorded during one oscillation period of the profile from which the pressure and velocity can be evaluated in the given time instants. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2010
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