Topical Problems of Fluid Mechanics


Institute of Thermomechanics AS CR, v.v.i.	CTU in Prague Faculty of Mech. Engineering Dept. Tech. Mathematics	MIO Université du Sud Toulon Var - AMU - CNRS - IRD	Czech Pilot centre ERCOFTAC

Influence of End Plates on Rotational Oscillations of a Rectangular Cylinder
Shmigirilov R., Ryabinin A.
Abstract:
Oscillations of rectangular cylinder elastically suspended in an air-flow were studied experimentally. The amplitude of oscillations measured at various cylinder lengths was shown to be affected by changes in incoming flow velocity and also by the presence or absence of end plates restricting the flow of air through the ends of the cylinder. Steady-state oscillation amplitude increases with an increase in cylinder aspect ratio. In the presence of end plates, the oscillation amplitude linearly depends on the Strouhal number. At the cylinder aspect ratio of five, the presence or absence of end plates on the cylinder has no effect on the oscillation amplitude.
Keywords:
wind tunnel, steady oscillations, amplitude, end plates

Fulltext: PDF DOI: https://doi.org/10.14311/TPFM.2020.026

In Proceedings Topical Problems of Fluid Mechanics 2020, Prague, 2020 Edited by David Šimurda and Tomáš Bodnár, pp. 200-205 ISBN 978-80-87012-74-1 (Print) ISSN 2336-5781 (Print)