Macim

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

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• 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 Lighthills acoustic analogy
• Stabilized FEM for incompressible flows
• Efficient Fourier transform of the sound source
• Stabilized FEM for the Helmholtz equation

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Results I Acoustic response of a train
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Results II Acoustic response of a wing