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Aeroacoustic Models for Environmental Noise Reduction by Vehicles

This project aims to propose and test models to approximate and solve the aerodynamic sound generated by vehicles, with the objective of reducing environmental impact. The project utilizes algorithms based on Lighthill's acoustic analogy, stabilized FEM for incompressible flows, and efficient Fourier transform of the sound source. The results include the acoustic response of both a train and a wing.

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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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