Preliminary interferometry measurements of a flow field around fluttering NACA0015 profile

0375062 - ÚT 2013 RIV CZ eng J - Článek v odborném periodiku
Vlček, Václav - Kozánek, Jan
Preliminary interferometry measurements of a flow field around fluttering NACA0015 profile.
Acta Technica CSAV. Roč. 56, č. 4 (2011), s. 379-387. ISSN 0001-7043
Grant CEP: GA ČR GA101/09/1522
Výzkumný záměr: CEZ:AV0Z20760514
Klíčová slova: self-excited vibration * airfoil * aerodynamic tunnel * interferometry
Kód oboru RIV: BI - Akustika a kmity
http://journal.it.cas.cz

Experimental results of the optical measurements are presented of a flow field around the fluttering NACA0015 profile elastically supported as a two-degree freedom system in subsonic wind flow. A high-speed camera was used for the interferometry visualisation of the airflow in all phases of the profile’s motion. Special care was devoted to a proper evaluation of the fringes near the surface of the profile, which was blurry due to the fast vibration. Interferograms, pressure, and flow velocity around the surface of the vibrating body and the phase shift between rotation and translation cycles are presented.
Trvalý link: http://hdl.handle.net/11104/0207826