Application of Computional Fluid Dynamics for Study of the Occurrence of Aerodynamic Effect for its Application in the Construction of Electric Race Car

Abstract:

In this article the issues related to Computional Fluid Dynamics of the occurrence of innovative aerodynamic effect were presented. Analysis were performed to determine the occurrence of Kammback aerodynamic effect and its application in a shape of a body of the real racing car in order to minimize drag forces of the vehicle. For the analysis, ideal aerodynamic shapes were modeled, subsequently they were subjected to modifications which were used to determine the occurrence of effect. The basic modeled shape was the raindrop shape solid, which is generally regarded as the ideal shape in terms of aerodynamics. The result of analysis was compared with the drag values known from the literature. Afterwards changes in the shape of the base solid were made to verify and determine the optimum Kammback shape, selected from a set of possible solutions, in which the geometrical changes has the lowest difference of values of drag force and drag coefficient Cx(Cd) in comparison to the basic raindrop shape. Results of the study were subjected to graphic analysis, especially the distribution of air pressure on the surface of a solid and in a virtual wind tunnel, distribution of the air velocity and the course of air streams around the shape. The results were used to design the body of electric race car. The main objective was to minimize the aerodynamic drag of the vehicle.

• Periodical: Applied Mechanics and Materials (Volumes 809-810)
• Pages: 956-961
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.809-810.956
• Online since: November 2015
• Authors: Łukasz Grabowski*, Andrzej Baier, Andrzej Buchacz, Michał Majzner, Michał Sobek
• Keywords: Aerodynamics, CAD, CAE, CFD, Electric Car, FEM, Freeform Modeling, Greenpower, Kammback, Race Car, Realize Shape

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