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

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


    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.

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    Title :

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

    Additional title:

    Sae Technical Papers

    Contributors:
    Kim, Minsuk (author) / Song, Sunghun (author) / Ho, Sunghwan (author) / Byun, Sungjun (author) / Jung, Wooyoul (author) / Cha, Yongkil (author)
    Conference:

    10th International Styrian Noise, Vibration & Harshness Congress: The European Automotive Noise Conference ; 2018

    Published in:

    Sae Technical Paper Series

    Publication date :

    2018-06-13

    ISSN :

    2688-3627 , 0148-7191

    DOI :

    https://doi.org/10.4271/2018-01-1520

    Type of media :

    Conference paper

    Type of material :

    Print

    Language :

    English

    Keywords :

    Passenger compartments , Noise , Heating, ventilation, and air conditioning systems (HVAC)

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