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Aeroacoustic Models for Environmental Noise Reduction by Vehicles

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  1. Macim Project data • Title: Modelos de aeroacústica para la reducción del impacto medio-ambiental del ruido aerodinámico generado por vehículos • Project type: Proyecto del Ministerio de Ciencia y Tecnología, programa P4 • Reference: DPI2000-0431-P4-03 • Period: 28/05/2001 - 27/05/2004 • Collaborators: Oriol Guasch

  2. Objectives • To propose a model to approximate sound generated by turbulent low-Mach flows • To test different LES turbulence models • To solve the flow equations until audible frequencies • To obtain the aerodynamic sound

  3. Key numerical ingredients • Algorithm based on Lighthill’s acoustic analogy • Stabilized FEM for incompressible flows • Efficient Fourier transform of the sound source • Stabilized FEM for the Helmholtz equation

  4. Results I Acoustic response of a train

  5. Results II Acoustic response of a wing

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