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.

More information

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.

Abstract:

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 http://dx.doi.org/10.1115/AJK2011-23018.
[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.