Wing-Diffuser Interaction on a Sports Car
Paper in proceedings, 2011

Amongst the aerodynamic devices often found on race cars, the diffuser is one of the most important items. The diffuser can work both to reduce drag and also to increase downforce. It has been shown in previously published studies, that the efficiency of the diffuser is a function of the diffuser angle, ground clearance and most importantly, the base pressure. The base pressure of a car is defined by the shape of the car and in particular the shape at the rear end, including the rear wheels. Furthermore, on most race cars, a wing is mounted at the rear end. Since the rear wheels and wing will influence the base pressure it is believed that, for a modern race car, there could be a strong interaction between these items and the diffuser.


Lasse Malmkjaer Christoffersen

Chalmers, Applied Mechanics, Vehicle Safety

David Söderblom

Chalmers, Applied Mechanics, Vehicle Safety

Lennart Löfdahl

Chalmers, Applied Mechanics, Vehicle Engineering and Autonomous Systems

Richard Hill

Lotus Engineering

Louis Kerr

SAE technical paper. SAE 2011 World Congress and Exhibition, Detroit, 12 April 2011

Subject Categories

Fluid Mechanics and Acoustics



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