The paper presents RANS based three-dimensional simulations of a generic highspeed train comprising two and half cars, including the end car, using a mesh of 35 million polyhedral cells and Star-CCM+. The results show a very complex flow structure inside the inter car gap (ICG) with a distorted swirling fluid motion and the presence of strong secondary flows forming cellular structures. The drag for each ICG accounts for 4% of the two and half car total drag. The influence of offset between two cars was assessed by introducing a displacement of the coach car of 20 mm that increases the ICG drag by 32 %, relatively to the reference case. The presence of a small cross-wind component of 2 m/s was not enough to separate the train boundary layer, with an increase of CD less than 1 %. When the ICG is exposed to a cross-wind component and a geometry offset, the effects add up and the CD increases to 35 %, relative to the reference case.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Numerical investigations on the inter-car-gap flow for a generic high speed train


    Beteiligte:
    Sousa, F.A. (Autor:in) / Pereira, J.M. (Autor:in) / Pereira, J.C.F. (Autor:in) / Ali, I. (Autor:in) / Rüter, A. (Autor:in) / Alves, V. (Autor:in) / Rauter, F. (Autor:in)


    Erscheinungsdatum :

    2012


    Format / Umfang :

    12 Seiten, 9 Bilder, 1 Tabelle, 8 Quellen




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Datenträger


    Sprache :

    Englisch





    PIV investigation of the flow field underneath a generic high-speed train configuration

    Jönsson, Mattias / Haff, Johannes / Richard, Hugues et al. | Tema Archiv | 2009


    Inter-city connections in China: High-speed train vs. inter-city coach

    Wang, Jiaoe / Du, Delin / Huang, Jie | Elsevier | 2019


    Large Eddy Simulations of Side Flow Past a Generic Model of a High-Speed Train

    Kin, Natalia / Deiterding, Ralf / Wagner, Claus | British Library Conference Proceedings | 2016