A practical method has been developed for numerically predicting pressure losses and acoustic characteristics in silencers simultaneously under the quasi-operating conditions of internal combustion engines. In the present method, three-dimensional gas flow and pressure dynamics in silencers have been numerically simulated by means of a new three-dimensional non-linear fluid-dynamic model, where the gas exchange process in entire intake and exhaust systems has been calculated by a one-dimensional non-linear fluid-dynamic model for saying the computing time. In this three-dimensional fluid-dynamic model, an accurate numerical scheme with less numerical diffusion has been applied to the Reynolds average Navier-Stokes equations using an eddy-viscosity hypothesis. Pressure losses and insertion losses in silencers have been examined using the three-dimensional model. It has been shown that the present method can predict the pressure losses and acoustic characteristics simultaneously.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Simultaneous Prediction of Pressure Losses and Acoustic Characteristics in Silencers by Numerical Simulation


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Congress & Exposition ; 1996



    Publication date :

    1996-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





    Numerical and experimental acoustic analysis of dissipative silencers

    Barbieri, N. / Barbieri, R. / de Lima, K.F. et al. | British Library Conference Proceedings | 2008


    Acoustic modelling of silencers

    Peat, K. S. / Institution of Mechanical Engineers; Automobile Division | British Library Conference Proceedings | 1998


    Acoustic modelling of silencers

    Peat,K.S. / Loughborough Univ.of Technology,GB | Automotive engineering | 1997


    Numerical and Experimental Acoustic Analysis of Dissipative Silencers

    de Lima, Key Fonseca / Barbieri, Nilson / Barbieri, Renato | SAE Technical Papers | 2010