Whenhigh-speed trains pass through tunnels, large pressure fluctuations are produced and propagated through the tunnel as waves. These pressure waves affect the comfort of passengers. A number of one-dimensional methods for predicting the pressure waves have been developed and realistic results have been obtained in about forty years. The numerical method is introduced based on one-dimensional, unsteady, compressible, non-homentropic flow model and method of characteristics in the paper. The different applications of this numerical method are presented for the principal features of the flow in a high-speed railway tunnel. The application examples include a train passing through a tunnel and two trains passing each other in a tunnel. The examples have been carried out under the different conditions of the tunnel without or with airshafts, cross-passages, and perforated wall in tunnel.


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    Title :

    The One-Dimensional Unsteady Flow Prediction Method and Applications on the Pressure Waves Generated by High-Speed Trains Passing through a Tunnel


    Additional title:

    Lect. Notes Electrical Eng.


    Contributors:
    Ni, Yi-Qing (editor) / Ye, Xiao-Wei (editor) / Mei, Y. G. (author) / Zhou, C. H. (author)


    Publication date :

    2012-01-01


    Size :

    9 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English