Mean flow effects of the low-wavenumber pressure spectrum on a flexible surface
Abstract
The Lighthill theory is extended so that it may be used to determine the flow noise induced by a turbulent boundary layer over a plane homogeneous flexible surface. The influence of the surface properties and the mean flow on the sound generation is brought out explicitly through the use of a Green function. The form of the low-wavenumber wall-pressure spectrum on a rigid surface with an arbitrary mean flow profile is determined. The effect of a coating layer is investigated.
- Publication:
-
IN: Symposium on Flow-Induced Vibrations
- Pub Date:
- 1984
- Bibcode:
- 1984fiv.....5...63D
- Keywords:
-
- Flexibility;
- Flow Distribution;
- Sound Propagation;
- Surface Properties;
- Turbulent Boundary Layer;
- Wall Pressure;
- Coatings;
- Green'S Functions;
- Lighthill Method;
- Pressure Distribution;
- Fluid Mechanics and Heat Transfer