This paper presents results of the simulation of two vehicles overtaking each other at highways conditions (30 m/s). The simulation was fully unsteady and tracks the maneuver for several body lengthsfrom downstream to upstream. Different mesh strategies have been investigated and assessed. Structured methods with sliding planes have been found the most feasible. The results shown include the effects of relative speed and lateral separation. The passing maneuver is described in detail, and a number of physical phenomena are identified. In particular, the rapid fluid compression and acceleration at the nose passing situation yields a pulse in the drag of the overtaken vehicle. The high pressure bow wave followed swiftly by the low-pressure wake affects the side force and lateral stability at positions slightly different than the nose passing.


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    Title :

    Unsteady computational analysis of vehicle passing


    Additional title:

    Instationäre numerische Analyse des Überholvorgangs zweier Fahrzeuge


    Contributors:


    Publication date :

    2007


    Size :

    9 Seiten, 14 Bilder, 1 Tabelle, 30 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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