Elucidation of Aerodynamic Drag Reduction Mechanism Due to Air-dam Spoiler

An air-dam spoiler, which is widely equipped under the front bumper, is known to be one of the most effective aerodynamic devices to improve vehicle aerodynamic performances. However, the mechanism to control the aerodynamic characteristics has not clarified completely. This paper revealed fluid dynamic mechanism of the aerodynamic drag reduction regarding a small hatchback type passenger car. In this research, the authors investigated the mechanism by comparing the drag change to the flow structure change of the wake by PIV measurement. Finally, they explained clearly the mechanism of the drag reduction from the point of view of the wake structure change.


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  • Accession Number: 01717365
  • Record Type: Publication
  • Source Agency: Japan Science and Technology Agency (JST)
  • Files: TRIS, JSTAGE
  • Created Date: Jun 24 2019 3:27PM