The experimental investigation was conducted with a 25%-scaled realistic car model called “DrivAer” mounted in a wind tunnel. This model includes geometric elements of a BMW 3 series and an Audi A4, accommodating modular, rear-end geometries so that it represents a generalized modern production car. The measurements were done with two different DrivAer rear end configurations (fastback and notchback) at varying side-wind conditions and a Reynolds number of up to Re=3.2·106. An array of more than 300 pressure ports distributed over the entire rear section measured the temporal pressure distribution. Additionally, extensive flow visualizations were conducted.The combination of flow visualization, and spatially and temporally resolved surface pressure measurements enables a deep insight into the flow field characteristics and underlying mechanisms. Moreover, static pressure fluctuations indicate regions with a high turbulence level due to flow separation and interaction between different vortical structures. A directional decomposition of the pressure coefficient is demonstrated and acts generally normal to the surface of the vehicle, in the drag and lift direction.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Experimental Comparison of the Aerodynamic Behavior of Fastback and Notchback DrivAer Models


    Weitere Titelangaben:

    Sae International Journal of Passenger Cars. Mechanical Systems
    Sae Int. J. Passeng. Cars - Mech. Syst


    Beteiligte:

    Kongress:

    SAE 2014 World Congress & Exhibition ; 2014



    Erscheinungsdatum :

    2014-04-01


    Format / Umfang :

    10 pages




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Experimental comparison of the aerodynamic behavior of fastback and notchback DrivAer models

    Wieser,D. / Schmidt,H.J. / Mueller,S. et al. | Kraftfahrwesen | 2014


    Cost-effective numerical analysis of the DrivAer fastback model aerodynamics

    Felekos, Georgios / Douvi, Eleni / Margaris, Dionissios | SAGE Publications | 2023



    Characterization of the Flow past the Fastback DrivAer Automotive Model Using Unsteady Simulations

    Aultman, Matthew T. / Auza-Gutierrez, Rodrigo / Wang, Zhenyu et al. | AIAA | 2021


    The Proper Orthogonal and Dynamic Mode Decomposition of Wake Behind a Fastback DrivAer Model

    Ahani, Hamed / Nielsen, Jonas / Uddin, Mesbah | British Library Conference Proceedings | 2022