Characteristics of low-frequency variations embedded in vortex shedding process

J. J. Miau, J. T. Wang, J. H. Chou

Research output: Contribution to conferencePaperpeer-review


Experiments were made to study the flow characteristics in the near wake region of a twodimensional bluff body, namely a trapezoidal cylinder or a circular cylinder. The instantaneous velocity signals obtained at the inner edge of the separated shear layer and in the neighborhood of the rear end of the vortex formation region show the presence of low-frequency variations at the Reynolds numbers above 1(F. The low frequency variations noted in the velocity signals measured and the base pressure measured at the bluff body appear to be well correlated. These experimental observations suggest a physical picture that the variations of vortex formation length and base pressure are closely related in a real time manner.

Original languageEnglish
Publication statusPublished - 1997
Event28th Fluid Dynamics Conference, 1997 - Snowmass Village, United States
Duration: 1997 Jun 291997 Jul 2


Other28th Fluid Dynamics Conference, 1997
Country/TerritoryUnited States
CitySnowmass Village

All Science Journal Classification (ASJC) codes

  • General Engineering


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