Nonlinear propagation of a wave packet in a hard-walled circular duct
Abstract
The method of multiple scales is used to derive a nonlinear Schroedinger equation for the temporal and spatial modulation of the amplitudes and the phases of waves propagating in a hard-walled circular duct. This equation is used to show that monochromatic waves are stable and to determine the amplitude dependance of the cut off frequencies.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- May 1974
- Bibcode:
- 1974STIN...7618379N
- Keywords:
-
- Acoustic Ducts;
- Nonlinear Equations;
- Wave Propagation;
- Amplitude Modulation;
- Numerical Analysis;
- Phase Modulation;
- Fluid Mechanics and Heat Transfer