Transformation of acoustic oscillations into the eddy ones in turbulent flows
Abstract
The transformation of acoustic disturbances into eddy disturbances is studied experimentally for the following two cases: turbulent wake and turbulent boundary layer past a backward step. The measurements of the amplitude and phase of the disturbances show the presence of a determined structure of the flow. The transformation from acoustic to eddy disturbances is shown to be intensified by the spatial inhomogeneity of the mean flow.
- Publication:
-
Turbulence and Chaotic Phenomena in Fluids
- Pub Date:
- 1984
- Bibcode:
- 1984tcpf.proc..427I
- Keywords:
-
- Acoustic Excitation;
- Backward Facing Steps;
- Oscillating Flow;
- Turbulent Boundary Layer;
- Turbulent Wakes;
- Vortices;
- Flow Geometry;
- Flow Measurement;
- Shear Flow;
- Subsonic Wind Tunnels;
- Thin Plates;
- Fluid Mechanics and Heat Transfer