Direct aeroacoustic computation of exhaust mufflers flow noise English

  • Category Technical paper
  • Related event International Congress : Automotive NVH comfort - 22 & 23 October 2014
  • Edition SIA
  • Date 10/22/2014
  • Author JL. Adam - Renault | F. Morin - Segula Technologies
  • Language English
  • Type PDF file (864.48 Ko)
    (Downloadable immediately on receipt of online payment)
  • Number of pages 10
  • Code R-2014-09-20
  • Fee from 8.00 € to 10.00 €

Exhaust flow noise simulation still remains a challenging activity because it requires computing two physical phenomena (turbulence and acoustic waves) with very different amplitude and length scales. For the past decade an innovative numerical method called “Lattice Boltzmann Method” has emerged as a very promising tool. Based on that numerical scheme, a recently developed software called LaBS (Lattice Boltzmann Solver) has been used to evaluate the noise generated by exhaust mufflers. Acoustic Results are presented for academic geometries and real mufflers. These numerical results are compared to experimental data measured on a cold flow bench for the same configurations. Acoustic broadband spectra comparison up to 10 kHz are presented and discussed.


Conference proceedings and magazines are sent by post contrary to the PDF files, which can be downloaded as soon as the payment is completed.
They can't be ordered in the same shopping cart.

Select your fee