Abstract
In this paper we study a low frequency model for acoustic propagation in a 2D flow duct. For some Mach profile flow, we are able to give a well-posedness theorem. Its proof relies on a quasi-explicit expression of the solution which provides us an efficient numerical method. We give and comment numerical results for particular linear, tangent and quadratic profiles. Finally, we give a numerical validation of our asymptotic model.
| Original language | English |
|---|---|
| Pages (from-to) | 508-524 |
| Number of pages | 17 |
| Journal | Communications in Computational Physics |
| Volume | 11 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1 Feb 2012 |
Keywords
- Acoustics in flow
- Asymptotic analysis
- Galbrun's equations
- Laplace transform