Aerodynamic interaction between two medium-sized trucks in two adjacent lanes under crosswind

Abstract

This study numerically investigates the effects of longitudinal distance between two stationary medium-sized trucks, laterally positioned in adjacent lanes, on their aerodynamic interaction under crosswind conditions through Large Eddy Simulation (LES). The focus is on the variations in aerodynamic force coefficients, pressure distribution, and flow field around the trucks. Aerodynamic forces coefficients such as side force and yawing moment of both upstream and downstream trucks varied significantly with their longitudinal distance, while the other coefficients were less affected. These variations were further discussed based on the flow characteristics and the interaction of vortices between trucks. These results provide insights into the aerodynamic stability of medium-sized trucks under crosswind conditions.