As an alternative to the element based methods, recently a wave based technique (WBT) has been developed. Since it is based on the indirect Trefftz approach, exact solutions of the governing differential equation are used to approximate the dynamic field variables. This paper discusses the extensions of the WBT for the analysis of engine noise radiation problems in 3 dimensions under anechoic conditions. Furthermore, necessary extensions of shape functions, numerical integration and a methodology to create a WBT radiation models are described. The performance of the method compared to a commercial BEM solution is demonstrated with a real engine example.


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    Titel :

    Application of the Wave Based Technique to Predict the Engine Noise Radiation Under Anechoic Conditions


    Weitere Titelangaben:

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


    Beteiligte:

    Kongress:

    SAE 2009 Noise and Vibration Conference and Exhibition ; 2009



    Erscheinungsdatum :

    2009-05-19


    Format / Umfang :

    10 pages




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Engine Noise Testing in an Economical "Semi" Anechoic Room

    Gaspar,R. / Reif,Z. / Sridhar,K. et al. | Kraftfahrwesen | 1978


    Engine Noise Testing in an Economical “Semi” Anechoic Room

    Sridhar, K. / Gaspar, Robert / Reif, Zygmunt | SAE Technical Papers | 1978


    Generating Anechoic Traveling Wave in Beams with Various Boundary Conditions

    Motaharibidgoli, Seyedmostafa / Malladi, V. V. N. Sriram / Tarazaga, Pablo A. | Springer Verlag | 2019


    Generating Anechoic Traveling Wave in Beams with Various Boundary Conditions

    Motaharibidgoli, Seyedmostafa / Malladi, V. V. N. Sriram / Tarazaga, Pablo A. | TIBKAT | 2020