On the transient aerodynamic forces induced on heavy and light vehicles in overtaking processes Online publication date: Sat, 28-Feb-2015
by C. Noger, E. Van Grevenynghe
International Journal of Aerodynamics (IJAD), Vol. 1, No. 3/4, 2011
Abstract: The wind sensitive vehicle design is an important issue in their development and is essentially conditioned by fuel economy and more and more by changes in environmental conditions that may be sudden (crosswind, overtaking/crossing manoeuvres). These interactions are complicated to understand because they interact on the aerodynamics, mass, suspensions, steering geometry as well as human correction. In particular, when two vehicles overtake, they mutually influence the flow-field around each other and thereby the forces and moments acting on them are affected. This is especially true when heavy and light vehicles are driven at proximity. The present study aims to clarify and to investigate experimentally the transient aerodynamic force responses in terms of quasi-steady aerodynamic forces and moments acting on heavy and light vehicles in overtaking manoeuvres and the way to reproduce these interactions in full scale automotive wind tunnels.
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