Direct Aeroacoustics Predictions of Automotive HVAC Systems based on Lattice Boltzmann Method

2018-01-1520

06/13/2018

Event
10th International Styrian Noise, Vibration & Harshness Congress: The European Automotive Noise Conference
Authors Abstract
Content
The demand for low noise level in vehicle cabin continues to rise lately. In particular, noise generated by eco-friendly cars such as hybrid and electric ones tends to become lower and lower. In this market environment, the noise contributions caused by HVAC systems are also increasing. Therefore, it becomes increasingly important to accurately predict noise generated by HVAC systems and analyze the noise sources and resolve the noise issue. In this study, direct acoustics prediction approach based on Lattice Boltzmann Method is applied to predict the flow-induced noise from HVAC systems including blower and ducts and find noise sources. In order to validate the simulation result, acoustics measurements are performed on HVAC systems in an anechoic room and the results are compared to each other. A new technique is applied to finding a noise source for a specific frequency and shows improved noise level through modifying the geometry related to noise sources detected by the simulation.
Meta TagsDetails
DOI
https://doi.org/10.4271/2018-01-1520
Pages
7
Citation
Jung, W., Cha, Y., Song, S., Byun, S. et al., "Direct Aeroacoustics Predictions of Automotive HVAC Systems based on Lattice Boltzmann Method," SAE Technical Paper 2018-01-1520, 2018, https://doi.org/10.4271/2018-01-1520.
Additional Details
Publisher
Published
Jun 13, 2018
Product Code
2018-01-1520
Content Type
Technical Paper
Language
English