A study of flow past a cylinder of varying aspect ratio under acoustic loading
Abstract
Low-turbulence wind tunnel tests were carried out to investigate flow structure in the boundary layer separation region and in the near wake of a cicular cylinder of varying aspect ratio with emphasis on the effect of acoustic perturbations. It is found that the superposition of a high-frequency acoustic field (Sh = 1.8-5.0) on uniform transverse flow past cylinders of various aspect ratios leads to the transformation of acoustic perturbations to vortices in the separation region. The evolution of vortices downstream eventually leads to changes in flow structure.
- Publication:
-
Akademiia Nauk SSSR Sibirskoe Otdelenie Izvestiia Seriia Tekhnicheskie Nauki
- Pub Date:
- April 1989
- Bibcode:
- 1989SiSSR.......34B
- Keywords:
-
- Aerodynamic Characteristics;
- Aspect Ratio;
- Cylindrical Bodies;
- Flow Characteristics;
- Sound Waves;
- Wind Tunnel Tests;
- Boundary Layer Separation;
- Low Turbulence;
- Near Wakes;
- Oscillating Flow;
- Vortices;
- Fluid Mechanics and Heat Transfer