Amr A. Mohamed Mohamed Hassan
Aerodynamic Drag Reduction by Vortex Generators for Sedan Cars
To save energy and to protect the global environment, fuel consumption reduction is primary concern of
automotive development. One of the main causes of aerodynamic drag for Sedan vehicles is the separation of
flow near the vehicle’s rear end. To delay flow separation, bump-shaped vortex generators are tested for
application to the back end of a sedan. The main purpose of the present work is to investigate the effect of
vortex generators on the drag coefficient for the modern road vehicles at different velocities.
Computational Fluid Dynamics (CFD) code FLUENT was used to evaluate the flow distribution around Sedan
model. For this purpose we choose one sedan car model (Fabia) which is common in Egyptian market. The CFD
results obtained were also used to evaluate the drag coefficient by calculating the force acting on the body. The
results obtained indicate that CFD flow simulation is a useful tool for providing predictions of pressure
distribution and forces exerted on the vehicle components.