Meet-us at the 25th AIAA/CEAS Aeroacoustics Conference

Meet us at the 25th AIAA/CEAS Aeroacoustics Conference (Aeroacoustics 2019)

Location: 20 – 24 May 2019
Location: Delft, The Netherlands
Venue: Delft University of Technology

ProLB will be present during the 25th AIAA/CEAS Aeroacoustics Conference in Delft in may 2019 !

Dr. Sébastien Bocquet will be here to present is article Evaluation of the Lattice Boltzmann Method for Aero-acoustic Simulations of Industrial Air Systems. This article has been written in a partnership with Renault, Airbus and Valeo.

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Join ProLB‘s engineers to learn more about how ProLB allows automotive and aircraft manufacturers to facilitate acoustic management in their product development cycles. ProLB is a CFD software solution developed by CS and based on the lattice Boltzmann method.

Evaluation of the Lattice Boltzmann Method for Aero-acoustic Simulations of Industrial Air Systems

Sebastien Bocquet (1), Denis Ricot (2), Alois Sengissen (3) , Cyril Vincent-Viry (4), Bruno Demory (4), Manuel Henner (4) & Fabrice Ailloud (4)

  • (1) CSSI, Toulouse, France.
  • (2) Renault, Guyancourt, France.
  • (3) Airbus Operations SAS, Toulouse, France.
  • (4) Valeo, Le Mesnil Saint-Denis, France.


Noise from Heating, Ventilation and Air Conditioning (HVAC) systems is  a subject of interest in the automotive and aeronautics industries. Delivering a quiet HVAC is a  differentiating factor on both subjective level (perceived quality of  the product) and objective level (comfort of the passengers & crews).  In addition, as significant progresses have been made in the  reduction of engine noise, the HVAC noise source is becoming a larger  contributor to cabin noise. Therefore, the understanding of noise production mechanisms and the capability to design low-noise HVAC components is a key subject. CFD simulations based on the Lattice-Boltzmann Method (LBM) have shown accuracy of 2dB  OASPL on HVAC noise predictions [1]. Combined with advanced acoustic  post-processing, such simulations can help to design quieter HVAC  systems [2].

HVAC systems also constitute challenging test cases to validate  aero-acoustic solvers. Indeed, they require wall boundary conditions  that correctly handle complex geometries, coherent near-wall  aerodynamics and mass conservation. In addition, noise levels are  generally low, which immediately reveals the solver deficiencies in  terms of modelling and numerical errors.

[1] Pérot, F., Kim, M.-S., Wada, K., Norisada, K., Kitada, M., Hirayama, S., Sakai, M., Imahigasi, S., and Sasaki, N., “HVAC Blower Aeroacoustics Predictions Based on the Lattice Boltzmann Method,” , No. 44403, 2011, pp. 921–929. doi:10.1115/AJK2011-23018, URL
[2] Mann, A., Perot, F., Meskine, M., and Kim, M.-S., “Designing quieter HVAC systems coupling LBM and flow-induced noise source identification methods,” 10th FKFS Conference: Progress in Vehicle Aerodynamics and Thermal Management, 2015.