AN EXPERIMENTAL INVESTIGATION OF THE EFFECT OF THE MULTI VORTEX GENERATOR FOR DRAG REDUCTION IN A UTILITY VEHICLE

An experimental investigation was done in a subsonic wind tunnel to study the variation of drag and lift with and without multi vortex generators (MVG) on the roof of a utility vehicle at varying length to height ratio of MVG. The length to height (L/H) ratio used are 1.5, 2 and 2.5.To measure the effect of altering the vehicle body, wind tunnel tests have been performed with 1:15 scaled model of the utility vehicle with velocities of 2.42, 3.7, 5.42 and 7.14 m/s. The experiments showed that a great improvement of the aerodynamic drag force reduction can be achieved with multi vortex generator