Nonlinear acoustic wave propagation in atmosphere
Abstract
In this paper a model problem is considered that simulates an atmospheric acoustic wave propagation situation that is nonlinear. The model is derived from the basic Euler equations for the atmospheric flow and from the regular perturbations for the acoustic part. The nonlinear effects are studied by obtaining two successive linear problems in which the second one involves the solution of the first problem. Well-posedness of these problems is discussed and approximations of the radiation boundary conditions that can be used in numerical simulations are presented.
- Publication:
-
National Aeronautics and Space Administration Report
- Pub Date:
- March 1986
- Bibcode:
- 1986nasa.reptQ....H
- Keywords:
-
- Nonlinearity;
- Sound Waves;
- Wave Propagation;
- Approximation;
- Boundary Conditions;
- Boundary Value Problems;
- Euler Equations Of Motion;
- Perturbation;
- Acoustics