Drag Reduction Mechanisms Due to Moving Ground and Wheel Rotation in Passenger Cars

  • Elofsson P
  • Bannister M
  • 25

    Readers

    Mendeley users who have this article in their library.
  • 37

    Citations

    Citations of this article.

Abstract

There are now several wind tunnel facilities within Europe for testing passenger cars with and without moving ground and rotating wheel conditions (henceforth abbreviated to MVG&RW conditions). Within these facilities, the drag of a car under MVG&RW conditions is typically less than the drag of a car under stationary ground and stationary wheel conditions. This drag difference has been found to vary from a decrease of about 25 drag counts to a small drag increase according to published sources. A drag reduction of 10 to 20 drag counts is more typical, however. Although some of the mechanisms for this drag reduction have been proposed over the last 10 years, a complete list and description of the mechanisms has still not been described. This paper gives descriptions of additional drag mechanisms related to moving ground and rotating wheels. In particular, a mechanism which is often the most important for drag reduction due to MVG&RW is described in detail. In this paper, the drag reduction due to moving ground and rotating wheels has been studied by a break-down of the MVG&RW conditions into: 1. the effect of the ground movement/ground plane conditions 2. the effect of front wheel rotation 3. the effect of rear wheel rotation This

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

  • Per Elofsson

  • Mark Bannister

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free