Vortex-Induced Vibration and Frequency Lock-In of an Airfoil at High Angles of Attack


Journal Article

© 2016 by ASME. Vortex-induced vibration is a fluid instability where vortices due to secondary flows exert a periodic unsteady force on the elastic structure. Under certain circumstances, the shedding frequency can lock into the structure natural frequency and lead to limit cycle oscillations. These vibrations may cause material fatigue and are a common source of structural failure. This work uses a frequency domain, harmonic balance (HB) computational fluid dynamics (CFD) code to predict the natural shedding frequency and lock-in region of an airfoil at very high angles of attack. The numerical results are then successfully compared to experimental data from wind tunnel testings.

Full Text

Duke Authors

Cited Authors

  • Besem, FM; Kamrass, JD; Thomas, JP; Tang, D; Kielb, RE

Published Date

  • January 1, 2016

Published In

Volume / Issue

  • 138 / 1

Electronic International Standard Serial Number (EISSN)

  • 1528-901X

International Standard Serial Number (ISSN)

  • 0098-2202

Digital Object Identifier (DOI)

  • 10.1115/1.4031134

Citation Source

  • Scopus