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Communication Dans Un Congrès Année : 2002

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.
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Dates et versions

hal-02352580 , version 1 (26-06-2024)

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Christophe Bogey, Christophe Bailly. A Family of Low Dispersive and Low Dissipative Explicit Schemes for Computing Aerodynamic Noise. 8th AIAA/CEAS Aeroacoustics Conference & Exhibit, Jun 2002, Breckenridge, United States. ⟨10.2514/6.2002-2509⟩. ⟨hal-02352580⟩
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