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Alstom

Alstom. Project data Title : Simulación 3D del flujo de aire alrededor del primer y segundo coche de un tren de alta velocidad (TAV) Company: Ingeniería para el Control del Ruido (ICR) Period: 01/06/2003 - 31/12/2003 Collaborators: Oriol Guasch. Objectives

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Alstom

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  1. Alstom Project data • Title: Simulación 3D del flujo de aire alrededor del primer y segundo coche de un tren de alta velocidad (TAV) • Company: Ingeniería para el Control del Ruido (ICR) • Period: 01/06/2003 - 31/12/2003 • 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

  5. Results II

  6. Results III

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