A box-shaped ground vehicle was used to simulate the aerodynamic drag of delivery vans, trucks, and motor homes. A coast-down method was used to define the drag of this vehicle in a configuration with all square corners and a modified configuration with the four vertical corners rounded. The tests ranged in velocity from 30 miles per hour to 65 miles per hour, and Reynolds numbers ranged from 4.4 x 1,000,000 to 1.0 x 10 to the 7th power based on vehicle length. The modified configuration showed a reduction in aerodynamic drag of about 40 percent as compared to the square cornered configuration. (Author)


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    Title :

    Drag Reduction Obtained by Rounding Vertical Corners on a Box-Shaped Ground Vehicle


    Contributors:

    Publication date :

    1974


    Size :

    20 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English