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Aerodynamic performances of rounded fastback vehicle

Rossitto, Giacomo and Sicot, Christophe and Ferrand, Valérie and Borée, Jacques and Harambat, Fabien Aerodynamic performances of rounded fastback vehicle. (2017) Proceedings of the Institution of Mechanical Engineers, Part D: journal of automobile engineering. ISSN 0957-6509

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Official URL: https://doi.org/10.1177/0954407016681684

Abstract

Experimental and numerical analyzes were performed to investigate the aerodynamic performances of a realistic vehicle with a different afterbody rounding. This afterbody rounding resulted in a reduction to drag and lift at a yaw angle of zero, while the crosswind performances were degraded. Rounding the side pillars generated moderate changes to the drag and also caused important lift reductions. A minor effect on the drag force was found to result from the opposite drag effects on the slanted and vertical surfaces. The vorticity distribution in the near wake was also analyzed to understand the flow field modifications due to the afterbody rounding. Crosswind sensitivity was investigated to complete the analysis of the aerodynamic performances of the rounded edges models. Additional tests were conducted with geometry modifications as spoilers and underbody diffusers.

Item Type:Article
HAL Id:hal-01449542
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Ecole Nationale Supérieure de Mécanique et d'Aérotechnique - ENSMA (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Other partners > Université de Poitiers (FRANCE)
Laboratory name:
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Deposited By: Valérie Ferrand
Deposited On:30 Jan 2017 14:28

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