Turbulence caused by train motion, heat radiation and wind eddies destroys the coherent nature of the ground effect. Due to upward refraction, only a certain segment of the track contributes to noise emission. Thus, geometrical spreading and refraction govern the process of noise propagation. Noise generation is modelled by a line source of point sources with dipole directivity.


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    Title :

    Influence of refraction and turbulence on railroad noise


    Contributors:

    Published in:

    Publication date :

    1998


    Size :

    8 Seiten, 17 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English






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