Theoretical analysis and experimental optimization of aerodynamic characteristics of different passenger car bodies by implementing vortex generators

Abstract

The day to day increase in fuel cost and amendment of stringent emission norms in all the global nations have drawn the special attention of every automotive manufacturer and made them pay serious interest towards cutting down the fuel consumption and the level of harmful pollutants emitted by the vehicle The aerodynamic behaviour of the vehicle plays a predominant role in slashing the vehicle fuel consumption particularly at its increased moving speeds The present work has focussed on the investigation of the aerodynamic performance of typical sedan and SUV car models assisted with three numbers of delta and right triangular profiled vortex generators VGs on the roof of the car models at dissimilar VG yaw angle configurations Prior to the selection of the above two mentioned VG designs the standard aerodynamic road vehicle reference model called Ahmed body was utilized in this study to quantify the best VG design among the six different VG profiles considered The three numbers of VGs are positioned in the place just before the commencement of rear slant surface of the Ahmed body and it has been computationally simulated using realizable k and#8455; model with the help of ANSYS FLUENT as a numerical simulation tool. newline