Authors: S. Sathish Kumar, S. Venkata Ruthwik, M. Rohith Kumar, Professor Dr Yagya Dutta Dwivedi
Abstract: This project investigates the aerodynamic performance of the Ahmed body with 35⁰, a well-known geometric model for studying vehicle aerodynamics, particularly at varying slant angles. This study focuses on the effects of various aerodynamic add-ons, including vortex generators, custom-generated striped vortex generators on the rear end, side vanes and base flaps on the drag and lift characteristics of the Ahmed body. Computational fluid dynamics (CFD) simulations are employed to analyze the airflow around the model under different configurations. Designed in Catia V5, the geometry is modeled and meshed in Ansys Workbench and Simulation is performed in Fluent. The mesh parameters are taken from [6],;initially, the results of the Ahmed Body were obtained for Cd-0.285 which are quite close to those value mentioned 0.289.Later grid independence was performed for better accuracy, and later add-ons were added and tested. The results indicated an overall drag reduction of approximately 12% from that of the Ahmed Body without any add-ons. This resulted in the power consumption of 175 W of energy.
DOI: https://doi.org/10.5281/zenodo.15687640
