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Numerical Simulation of a Race Car Wing Operating in the Wake of Leading Vehicle with Varying Diffuser Angles

Conference paper
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Part of the Lecture Notes in Mechanical Engineering book series (LNME)

Abstract

2D flow analysis of a race car wing operating in the wake of varying diffuser angles is carried out in ANSYS Fluent CFD software. The combined effect of the high lift wing and the diffuser was studied in the wake region as it directly affects any vehicle in the path. The behaviour of aerodynamic forces on the high lift wing was studied. By altering the inclination of the diffuser above the surface, the model configuration was altered. The front wing of the race car operates in the wake region which helps in studying the ground effect caused by the diffuser and the disturbance caused by the rear wing of the race car. The optimum diffuser angle was found out by analysing the problem at multiple diffuser angles and at varying freestream velocities. A numerical investigation of generic racing car wing was conducted, using original sub-scale experimental data for validation. The downforces are extracted from the simulations and the most efficient diffuser angle is inferred. While 16.7° was marginally more efficient than 10° in both cases, the substantial improvement in the efficiency of the lower angle diffuser can still be seen.

Keywords

Flow analysis Race car wing Diffuser ANSYS fluent Wake region Ground effect Diffuser angle Bluff body Turbulence contour Race car Front wing Velocity streamline Velocity distribution Ground clearance Boundary condition Element front wing Angle diffuser Rear wing Lower angle Generic racing car wake 

References

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Copyright information

© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2022

Authors and Affiliations

  1. 1.Department of Aerospace EngineeringSRM Institute of Science and TechnologyChennaiIndia

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