This paper is the first of two papers that address the simulation and effects of turbulence on surface vehicle aerodynamics. This, the first paper, focuses on the characteristics of the turbulent flow field encountered by a road vehicle. The natural wind environment is usually unsteady but is almost universally replaced by a smooth flow in both wind tunnel and computational domains. In this paper, the characteristics of turbulence in the relative-velocity co-ordinate system of a moving ground vehicle are reviewed, drawing on work from Wind Engineering experience. Data are provided on typical turbulence levels, probability density functions and velocity spectra to which vehicles are exposed. The focus is on atmospheric turbulence, however the transient flow field from the wakes of other road vehicles and roadside objects are also considered. The effects of turbulence on vehicle aerodynamics and methods of experimental simulation are reviewed in a companion paper, Part 2 (Watkins and Cooper, 2007).


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    Title :

    The Unsteady Wind Environment of Road Vehicles, Part One: A Review of the On-road Turbulent Wind Environment


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE World Congress & Exhibition ; 2007



    Publication date :

    2007-04-16




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    The Unsteady Wind Environment of Road Vehicles, Part One: A Review of the On-road Turbulent Wind Environment

    Cooper, K. R. / Watkins, S. / Society of Automotive Engineers | British Library Conference Proceedings | 2007


    The unsteady wind environment of road vehicles, part one: a review of the on-road turbulent wind environment

    Cooper,K.R. / Watkins,S. / CooperAero,CA et al. | Automotive engineering | 2007


    2007-01-1236 The Unsteady Wind Environment of Road Vehicles, Part One: A Review of the On-road Turbulent Wind Environment

    Cooper, K. R. / Watkins, S. / Society of Automative Engineers | British Library Conference Proceedings | 2007



    The Unsteady Wind Environment of Road Vehicles, Part Two: Effects on Vehicle Development and Simulation of Turbulence

    Watkins, S. / Cooper, K. R. / Society of Automotive Engineers | British Library Conference Proceedings | 2007