Identification of gravity waves in hydrodynamical simulations
Abstract
The excitation of internal gravity waves by an entropy bubble oscillating in an isothermal atmosphere is investigated using direct two-dimensional numerical simulations. The oscillation field is measured by a projection of the simulated velocity field onto the anelastic solutions of the linear eigenvalue problem for the perturbations. This facilitates a quantitative study of both the spectrum and the amplitudes of excited g-modes.
Appendices are only available in electronic form at http://www.edpsciences.org- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- July 2004
- DOI:
- 10.1051/0004-6361:20035606
- arXiv:
- arXiv:astro-ph/0311094
- Bibcode:
- 2004A&A...421..775D
- Keywords:
-
- hydrodynamics;
- waves;
- stars: oscillations;
- stellar dynamics;
- Astrophysics
- E-Print:
- 12 pages, 11 figures, Appendices only available online