On the interaction of a sound pulse with the shear layer of an axisymmetric jet, II: Heated jets
Abstract
The fluctuating field of a heated jet excited by a sound pulse is simulated numerically. The fluctuations in both the flow field and the far field are studied. The flow field results depend crucially on the stability properties of the heated jet. The altered stability properties due to the heating cause a reduction in the overall fluctuations and a shift of the instability waves into lower frequencies. These changes cause a similar downward shift in the far field spectrum and a reduction in the total far field noise. The results provide a partial explanation in terms of stability theory of experimentally observed properties of the noise of heated jets.
- Publication:
-
Journal of Sound Vibration
- Pub Date:
- February 1983
- DOI:
- 10.1016/0022-460X(83)90584-9
- Bibcode:
- 1983JSV....86..395B
- Keywords:
-
- Axisymmetric Flow;
- Flow Stability;
- High Temperature Fluids;
- Jet Flow;
- Shear Layers;
- Sound Waves;
- Wave Interaction;
- Computational Fluid Dynamics;
- Conservation Equations;
- Far Fields;
- Flow Distribution;
- Inviscid Flow;
- Near Fields;
- Sound Pressure;
- Temperature Effects;
- Acoustics