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.
|Publication status||Published - 1997 Jan 1|
|Event||28th Fluid Dynamics Conference, 1997 - Snowmass Village, United States|
Duration: 1997 Jun 29 → 1997 Jul 2
|Other||28th Fluid Dynamics Conference, 1997|
|Period||97-06-29 → 97-07-02|
All Science Journal Classification (ASJC) codes