The University of Southampton
University of Southampton Institutional Repository

The influence of an upstream diffuser on a downstream wing in ground effect

Soso, M.D. and Wilson, P.A. (2008) The influence of an upstream diffuser on a downstream wing in ground effect Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 222, (4), pp. 551-563. (doi:10.1243/09544070JAUTO284).

Record type: Article


In a further effort to provide additional insight into the aerodynamic factors that may influence the creation of overtaking opportunities in open-wheeled racing categories such as Formula 1, a series of wind tunnel experiments were initiated at the University of Southampton to provide information on the effect that an upstream diffuser in ground effect may have on a downstream single element wing in ground effect. Investigations focused on force measurements, and on the extraction of wake profiles from the downstream wing and its flow field. The upstream model configuration was altered by changing the angle of the diffuser ramp and by varying the height of the diffuser above the ground. It was found that lower diffuser angle increased the efficiency of the downstream wing, and that changes to the vortex wake generated by the diffuser induced changes to the wake characteristics of the wing. It was also found that decreasing the ride height of the bluff body produced an increase in the thickness of the wake of the downstream wing.

PDF JAUTO284_published.pdf - Version of Record
Restricted to Registered users only
Download (431kB)

More information

Submitted date: 16 February 2006
Published date: 1 April 2008
Keywords: ground effect, aerodynamics, upstream diffuser, aerodynamic factors, wind tunnel experiments, downstream wing
Organisations: Fluid Structure Interactions Group


Local EPrints ID: 49879
ISSN: 0954-4070
PURE UUID: b34c640b-afa2-4102-8e12-27ddd7e2201b
ORCID for P.A. Wilson: ORCID iD

Catalogue record

Date deposited: 15 Apr 2008
Last modified: 17 Jul 2017 14:54

Export record



Author: M.D. Soso
Author: P.A. Wilson ORCID iD

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton:

ePrints Soton supports OAI 2.0 with a base URL of

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.