Experiments of Vortex-Induced Torsional Oscillation of a Flat Plate in Cross Flow Academic Article uri icon


  • A structure placed in a flow may be subjected to vortex-induced vibrations (VIV). With the growth of wind energy initiatives, the presence of VIV of large-scale wind-turbine blades provides a motivation of these studies. The speed, direction, and profile of the wind over the blade may lead to a variety of responses for the system in both operational and parked modes. The frequency of the shedding vortex depends on the shape of the structure as well as wind direction and speed. Synchronous behavior, also known as lock-in behavior, occurs when the frequency of this shedding vortex approaches a frequency of the structure. A primary objective of the research is to investigate by experiments the fundamental phenomenon of lock-in behavior related to VIV. Experiments are conducted on both the stationary and free-to-rotate configurations. In the stationary tests, measurements focus on determining the Strouhal number of the plate and the characteristics of vortex shedding of the plate at several flow velocities. Then, vibration tests are conducted to measure the frequency, the range of frequency for the lock-in behavior, and the amplitude of vibrations.

published proceedings


author list (cited authors)

  • Yang, Y. i., & Strganac, T. W.

citation count

  • 14

complete list of authors

  • Yang, Yi||Strganac, Thomas W

publication date

  • June 2013