Practical method to estimate drag in 30 to 40 km long submarine tunnel; series of measurements of static pressure difference occurring in front and in rear of train running in particular tunnel were carried out to express aerodynamic drag in terms of friction force along train surface which is related to this pressure difference; equation to determine static pressure difference is derived.


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    Title :

    Estimation of aerodynamic drag of train in long tunnel


    Additional title:

    Tokyo. Ry Tech Research Inst -- Quarterly Report


    Contributors:
    Fukuchi, G. (author) / Nishizawa, S. (author)


    Publication date :

    1967


    Size :

    4 pages


    Type of media :

    Report


    Type of material :

    Print


    Language :

    English


    Keywords :


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