NUMERICAL SIMULATION OF AERODYNAMIC CHARACTERISTICS OF AHMED MODEL

Abstract

This paper studies the aerodynamic characteristics of Ahmed model. Numerical investigations were conducted with the model. The results of the numerical simulations were obtained using Reynoldsaveraged Navier-Stokes (RANS) equations with Realizable k - ε model. The Time-averaged velocity field, magnitude of the velocity, static pressure magnitude of the flow fields around Ahmed model are presented in this paper. The obtained result of drag coefficient (Cd) =0.291 and lift coefficient (Cl) = 0.025 in = 250. The results of this study elucidate the key aerodynamic characteristics around simplified car model (Ahmed model). The results obtained from the study are presented graphically and values of drag coefficient (Cd) =0.291, lift coefficient (Cl) = 0.025 in = 250, which helps better understanding aerodynamic characteristics around simplified car model (Ahmed model).