Computational analysis comparing aerodynamic performance of various generic automobile configurations

Sammy Diasinos, Kaustubh Dongre, James Keogh, Graham Doig, Tracie Barber

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution


Aerodynamic drag is a significant factor in the fuel efficiency of automobiles and alternative configurations, such as; sedans, wagons, and Sport Utility Vehicles (SUV) for example, are all expected to have significantly different aerodynamic characteristics. This study utilizes a Detached-Eddy Simulation to model the wake structure of the three previously mentioned vehicle configurations. The results indicate that an SUV and wagon can have approximately 30% and 15% more drag respectively than that of a comparable sedan and that the increase in drag can be attributed to the separation point from the roof of the vehicle due to the rear windscreen geometry. This has a significant impact on the formation of the C-pillar vortices and consequently the downwash and unsteadiness experienced in the wake of the vehicles.
Original languageEnglish
Title of host publicationFISITA 2014 World Automotive Congress
Subtitle of host publicationproceedings
Place of PublicationMaastricht, the Netherlands
PublisherFISITA World Automotive Congress
Number of pages8
Publication statusPublished - 2014
EventFISITA World Automotive Congress (35th : 2014) - Maastricht, the Netherlands
Duration: 2 Jun 20146 Jun 2014


ConferenceFISITA World Automotive Congress (35th : 2014)
CityMaastricht, the Netherlands


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