WIT Press


Suppression And Characteristics Of Flow- Induced Vibration Of Rectangular Prisms With Various Width-to-height Ratios

Price

Free (open access)

Paper DOI

10.2495/FSI010061

Volume

56

Pages

10

Published

2001

Size

907 kb

Author(s)

H. Sakamoto, K. Takai, M.M. Alam and M. Moriya

Abstract

In this study, the response characteristics and suppression of flow-induced vibrations of rectangular prisms with various width-to-height ratios were experimentally investigated. The present study focused on rotary oscillation, one of the three types of flow-induced vibration generated in a rectangular prism. The main findings were that (i) there are three types of flow-induced vibration, i.e., vortex excitation, low-speed and high-speed torsional flutter, (ii) the flow-induced vibration occurs due to change in fluctuating pressure on the surface of the prism based on the difference of rolling-up of the shear layer separating from the leading edge of the prism, (iii) the flow-induced vibration

Keywords