Numerical simulations on the aerodynamics of the Ahmed body at different slant angles

Gaurav Kumar; Chanfiou Ahmed Mboreha; Yahya Al-fakih

doi:10.46593/ijaera.2020.v06i03.002

Gaurav Kumar Department of Mechanical Engineering, Delhi Technological University, Delhi, India
Chanfiou Ahmed Mboreha Department of Aeronautical Engineering, Nanjing University of Aeronautics and Astronautics, Jiangsu, Nanjing, China
Yahya Al-fakih Department of Mechanical Engineering and Automation, Northeastern University, Shenyang, Liaoning, China

DOI: https://doi.org/10.46593/ijaera.2020.v06i03.002

Keywords: Ahmed Body, CFD of Ahmed body, numerical solution, separation bubble, C-pillar vortex.

Abstract

In this research, the aerodynamic behavior of Ahmed’s body with slant angles of 0°, 30° and 60° is studied using ANSYS FLUENT CFD code. The flow conditions for all cases were same while the rear slant angle is varied for Ahmed’s body. The aerodynamic parameters; lift coefficient and drag coefficient were focused mainly to analyze the flow behavior, it tells the aerodynamics efficiency. The time dependent transient simulation is run to study the behavior of fluid flow. As the Reynold’s number lied 5x105in turbulent regime so to accurately capture the turbulent effects, k-epsilon two equation model with