Strictly stable high order difference approximations for computational aeroacoustics |
| |
Authors: | Bernhard Müller Stefan Johansson |
| |
Affiliation: | Division of Scientific Computing, Department of Information Technology, Uppsala University, Box 337, 751 05 Uppsala, Sweden |
| |
Abstract: | High order finite difference approximations with improved accuracy and stability properties have been developed for computational aeroacoustics (CAA). One of our new difference operators corresponds to Tam and Webb's DRP scheme in the interior, but is modified near the boundaries to be strictly stable. A unified formulation of the nonlinear and linearized Euler equations is used, which can be extended to the Navier–Stokes equations. The approach has been verified for 1D, 2D and axisymmetric test problems. We have simulated the sound propagation from a rocket launch before lift-off. To cite this article: B. Müller, S. Johansson, C. R. Mecanique 333 (2005). |
| |
Keywords: | Acoustics Finite difference methods High order Aeroacoustics Acoustique Méthodes de différences finies D'ordre élevée Aéroacoustique |
本文献已被 ScienceDirect 等数据库收录! |
|