Abstract
In this paper, numerical investigation is carried out on two-dimensional Ahmed body model using Computational Fluid Dynamics in ANSYS Fluent 19.1. The 2-D model is designed in Catia v5 for 25°, 35° and 45° slant angles. The turbulent model used to analyze the flow dynamics is Realizable k-ε model. The drag coefficient variation with respect to slant angle is computed. The skin friction coefficient, wall shear stress and frictional velocity are also calculated.
Highlights
The flow around any vehicle is primarily of turbulent nature and it is observed by the largescale separations and reverse flow characteristics on the vehicle
The aerodynamic drag force is an important parameter to analyze the performance of the vehicle, and the automotive industry always tries to reduce the drag force to improve fuel efficiency
Increases on increasing the slant angle. He analyzed the effect of front radius and ground clearance on the performance of vehicle. This present work is focused on the numerical analysis of drag coefficient on increasing the slant angle of 2-D Ahmed body using commercial software ANSYS Fluent 19.1
Summary
The flow around any vehicle is primarily of turbulent nature and it is observed by the largescale separations and reverse flow characteristics on the vehicle. Guilmineau [3] did the simulation on Ahmed body at 25° and 35° slant angles with and without stilts using different turbulent models and compared their results with the experimental data in the literature They concluded that for 35° the presence of stilts increases the drag force. Khan and Umale [6] fabricated an ideal solid 3-D model of Ahmed body at 25° and 35° slant angles and performed both experiments and numerical simulation on it, and compared both the results for better understanding For both experiments and simulation, he observed that drag force. He analyzed the effect of front radius and ground clearance on the performance of vehicle This present work is focused on the numerical analysis of drag coefficient on increasing the slant angle of 2-D Ahmed body using commercial software ANSYS Fluent 19.1. The results in the form of drag coefficient, pressure coefficient, pressure contours and velocity streamlines are presented in the results and discussion section
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
