Professor of School of Engineering, Design and Built Environment, Western Sydney University, Australia. His research interests cover Industry 4.0, Additive Manufacturing, Advanced Engineering Materials and Structures (Metals and Composites), Multi-scale Modelling of Materials and Structures, Metal Forming and Metal Surface Treatment.
2024-02-24
2024-01-04
2023-11-02
Abstract—One of the most critical challenges facing automotive engineers worldwide is the manufacture of vehicles with the lowest aerodynamic drag. Therefore, this research aims to reduce aerodynamic resistance by analyzing the flow pattern characteristics and pressure fields. The method applied to delay separation and reduce longitudinal wake and vortex formation is the passive control in the form of dimples in the separation area. Furthermore, this research was carried out using a 1: 6 ratio of the Reverse to Real Ahmed body model. The computational approach was used to obtain the flow and pressure field characteristics with its aerodynamic resistance validated by experimental testing. Passive control was applied in a dimple configuration and two zigzag lines with ratios of 0.20, 0.25, and 0.50. The results showed that dimples in the vehicle model reduced longitudinal wake and vortex formation by delaying flow separation, increasing pressure efficiency, and reducing the highest aerodynamic drag for the computational and experimental approaches by 12.092% and 8.923%, respectively.
