With the reduction of engine and road noise, wind has become an important source of interior noise when cruising at highway speed. The challenges of weight reduction, performance improvement and reduced development time call for stronger support of the development process by numerical methods. Computational Fluid Dynamics (CFD) and finite element (FE) vibroacoustic computations have reached a level of maturity that makes it possible and meaningful to combine these methods for wind noise prediction.This paper presents a method used for coupling time domain CFD computations with a finite element vibroacoustic model of a vehicle for the prediction of low-frequency wind noise below 500 Hz. The procedure is based on time segmentation of the excitation load and transformation into the frequency domain for the vibroacoustic computations. It requires simple signal processing and preserves the random character as well as the spatial correlation of the excitation signal. The aeroacoustic load is applied on the entire outer surface of the vehicle body. The computed results are validated against wind tunnel measurements on a production vehicle. The numerical and experimental investigations provide some insight into the mechanisms involved in underbody wind noise.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Coupling CFD with Vibroacoustic FE Models for Vehicle Interior Low-Frequency Wind Noise Prediction


    Additional title:

    Sae International Journal of Passenger Cars. Mechanical Systems
    Sae Int. J. Passeng. Cars - Mech. Syst


    Contributors:

    Conference:

    SAE 2015 Noise and Vibration Conference and Exhibition ; 2015



    Publication date :

    2015-06-15


    Size :

    8 pages




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Coupling CFD with Vibroacoustic FE Models for Vehicle Interior Low-Frequency Wind Noise Prediction

    Glandier, Christian Y. / Eiselt, Mark / Prill, Oskar et al. | British Library Conference Proceedings | 2015


    Vibroacoustic soundproofing for helicopter interior

    Pavithra Nagaraj / Adham Ahmed Awad Elsayed Elmenshawy / Iyad Alomar | DOAJ | 2023

    Free access

    Similitude for Vibroacoustic Coupling Models With Geometric Distortion

    Cardellino, Giada / Adams, Christian / Schoder, Stefan et al. | AIAA | 2024


    High Frequency Vibroacoustic Analyses on VEGA Launch Vehicle

    Ferrara, V. / Culla, A. / Preve, A. et al. | British Library Conference Proceedings | 2007


    Vehicle Interior Noise Prediction

    Brandl, S. / Graf, B. / Biermayer, W. et al. | British Library Conference Proceedings | 2014