A Family of Low Dispersive and Low Dissipative Explicit Schemes for Computing Aerodynamic Noise
Résumé
Explicit numerical methods for spatial derivation, filtering and time integration are proposed. They are developed with the aim of computing directly the aerodynamic noise, but they are not limited to this application. All the methods are constructed in the same way by minimizing the dispersion and the dissipation errors in the wave numb er space up to kΔx=π/2. They are shown to be more accurate, and also more efficient numerically, than most of the standard explicit high-order methods. Two problems involving long-range sound propagation are resolved to illustrate their respective precisions.
Domaines
Sciences de l'ingénieur [physics]Origine | Fichiers produits par l'(les) auteur(s) |
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