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Figure 3.8 Vehicle Underbody Aerodynamics [19]

3.2.5 Vortex Generators

Vortex generators (VG), as shown in Figure 3.9, firstly were developed for aircrafts. Vortex generator is used to delay airflow separation in order to reduce the drag and lift. Airflow separation occurs when the airflow of an object detaches from the surface and creates eddies and vortexes. It will result in more drag and reduce the top speed and potentially downwards force because of the turbulent air entering other aerodynamic device (for example rear wing which generates the downwards force) and the wake of air behind the vehicle [19].





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