The severe additional aerodynamic loads that are generated on a small car when overtaking a coach have an adverse effect on the car handling stability and its safety. In this article, a two-way coupling of the unsteady aerodynamics and multi-body dynamics is performed in order to study the mutual interactions of a car in an overtaking maneuver with a coach. The unsteady aerodynamic interactions are obtained by using SST (Menter) K-Omega Detached Eddy Simulation and overset mesh technology. The aerodynamics couple the multi-body dynamics, taking into account the effects of the transverse spacing and the cross winds. To validate the necessity of the two-way coupling method, a one-way coupling of the aerodynamics to the vehicle motion is also conducted. Finally, by comparing the aerodynamic loads and the dynamic response of the overtaking car in different overtaking maneuvers between one- and two-way coupling, the results show that it should be considered with two-way coupling analyses of the car while overtaking a coach, particularly under the severe conditions of a lower transverse spacing or the crosswinds.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Coupled analysis of the unsteady aerodynamics and multi-body dynamics of a small car overtaking a coach


    Contributors:
    Liu, Jun (author) / Gu, Zhengqi (author) / Huang, Taiming (author) / Li, Shuya (author) / Zheng, Ledian (author) / Sun, Kai (author)


    Publication date :

    2019-12-01


    Size :

    16 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    The Aerodynamics of a Small Car Overtaking a Truck

    Howell, J. / Garry, K. / Holt, J. et al. | British Library Conference Proceedings | 2014


    The aerodynamics of a small car overtaking a truck

    Howell,J. / Garry,K. / Holt,J. et al. | Automotive engineering | 2014


    Projectile Aerodynamics Overtaking a Shock Wave

    Rajesh, G. | Online Contents | 2008


    The Aerodynamics of a Small Car Overtaking a Truck

    Howell, Jeff / Holt, Jenny / Garry, Kevin | SAE Technical Papers | 2014


    Unsteady aerodynamics mitigation for multi-body aerospace apparatus

    FRICKER DARREN ALEC / BOWCUTT KEVIN G | European Patent Office | 2020

    Free access