Numerical Aeroacoustics Prediction of a Ducted Diaphragm Chaining RANS-LES and DES Results to a Parallel Boundary Element Method 2016-01-1810
In the framework of noise reduction of HVAC (Heating, Ventilating and Air Conditioning) systems designed for cars, the present study deals with the numerical prediction of aeroacoustics phenomena encountered inside such devices for industrial purposes, i.e. with a reasonable CPU time. It is then proposed in this paper to assess the validity of the chaining, via Lighthill-Curle analogy, of a DES (Detached Eddy Simulation) resulting from the CFD code OpenFOAM (ESI Group) versus a RANS-LES (Large Eddy Simulation) and a BEM calculation resulting from the Vibro/Aeroacoustics software VA One (ESI Group) on an academic case of air passing through a rectangular diaphragm at a low Mach number. The BEM code being parallelized, the performances of DMP (Distributed Memory Processing) solution will also be assessed. The results of such calculations will be compared against experimental PIV (Particle Image Velocimetry) measurements and Sound Pressure Levels measured by flush-mounted microphones at UTC (Université de Technologie de Compiègne). Furthermore, the results will be cross-compared with the university’s numerical simulations.
Citation: Escouflaire, M., Zerbib, N., Mas, D., Papaxanthos, N. et al., "Numerical Aeroacoustics Prediction of a Ducted Diaphragm Chaining RANS-LES and DES Results to a Parallel Boundary Element Method," SAE Technical Paper 2016-01-1810, 2016, https://doi.org/10.4271/2016-01-1810. Download Citation
Marie Escouflaire, Nicolas Zerbib, David Mas, Nicolas Papaxanthos, Saad Bennouna, Emmanuel Perrey-Debain, Boureima Ouedraogo, Solène Moreau, Jean Michel Ville
ESI Group, ESI France, Université Technologique de Compiègne, Valeo Thermique Habitacle
9th International Styrian Noise, Vibration & Harshness Congress: The European Automotive Noise Conference