Pressure field in an annular conduit in the presence of a fluid in solid-body rotation
Abstract
Calculations are presented that demonstrate the coupling produced by the fluctuating vortical and acoustic modes inside a mean flow in solid-body rotation. The calculated shear waves are equivalent to the inertial waves that develop in the rotating flow of an incompressible fluid. It is suggested that shear waves represent a significant source of noise in turbomachinery by the production of structures which have a different periodicity than that of the rotor. It is proposed that rotor-wake inhomogeneity creates a situation that produces noise by interacting with the downstream stator blades.
- Publication:
-
Revue d'Acoustique
- Pub Date:
- 1983
- Bibcode:
- 1983RvAc...16..240R
- Keywords:
-
- Aeroacoustics;
- Fluid Pressure;
- Pressure Distribution;
- Rotating Fluids;
- Fourier Transformation;
- Small Perturbation Flow;
- Turbomachinery;
- Wave Dispersion;
- Fluid Mechanics and Heat Transfer