Passive Flow Control of Ahmed Body using Control Rod

In the current study, numerical analysis of passive control flow with a rod for Ahmed body is performed at different slant angles and velocities placed locations on surface. The aim study to improve aerodynamic performance by preventing separation surface using rod. This method uses that has not been applied simplified ground vehicles before. Therefore, it can be said this new example in point application body. solution Computational Fluid Dynamics (CFD) method. solutions are firstly baseline geometry, results compared experimental data reported literature validation. CFD carried out means ANSYS RNG k- turbulence model used simulate flow-field since captures effect turbulent flow. 20 mm diameter dimensionless location (X/L=0.057 0.153) presented visually figures, drag coefficient values also given Table format. It concluded useful some specified delays suppresses maximum reduction achieved about 6.153% angle 35° m/s velocity air, 0.057, while minimum 1.048% 25° air 40 0.153.