Development of a Numerical Investigation Framework for Ground Vehicle Platooning

This paper presents a study on the flow dynamics involving vehicle interactions. In order to do so, this first explores aerodynamic prediction capabilities of popular turbulence models used in computational fluid simulations tandem objects and thus, ultimately framework for CFD ground platooning using realistic model, DrivAer. Considering availability experimental data, simulation methodology is developed arrangement surface-mounted cubes which requires an understanding role impacts associated model closure coefficients veracity. It was observed that accuracy SST k?? can be significantly improved through use combination modified values coefficients. Additionally, initial validation studies reveal inability Unsteady Reynolds-Averaged Navier-Stokes (URANS) approach resolve far wake, its frailty simulating body The Improved Delayed Detached Eddy Simulations (IDDES) wakes with reasonable accuracy. validated then applied fastback DrivAer at different longitudinal spacing. results show that, as spacing reduced, trailing car’s drag increased while leading decreased supports prior explanations vortex impingement reason changes. unlike case Ahmed bodies, does not return isolated state value two car-length separation. However, impact resolution wake detailed implication characterization interaction aerodynamics need further investigations.