A simple real-time aerodynamic model for vehicles in overtaking situations
Artikel i vetenskaplig tidskrift, 2013

Aerodynamic forces and moments play an important role in, e.g., overtaking situations, and affect the trajectory of the involved vehicles. One method of studying these effects and how the driver responds is via driving simulator studies. However, models that describe aerodynamic forces and moments are typically computationally complex and not suited for real time execution in driving simulators. The present work presents a simplified real time model of the moments and forces acting in an overtaking situation due to aerodynamic pressure imbalances. The model is compared with experimentally validated Navier-Stokes solutions. Despite the model's simplicity, implemented as finite impulse response filters, it manages to capture the main features of the forces and moments. The approach used to derive the model is fairly general and might be used in similar applications where the computational burden is a key issue.

aerodynamic moments

aerodynamic forces

real-time simulation

vehicle overtaking


Fredrik Bruzelius

Chalmers, Tillämpad mekanik, Fordonsteknik och autonoma system

David Uystepruyst

Chalmers, Tillämpad mekanik, Strömningslära

Bengt J H Jacobson

Chalmers, Tillämpad mekanik, Fordonsteknik och autonoma system

Sinisa Krajnovic

Chalmers, Tillämpad mekanik, Strömningslära

International Journal of Vehicle Systems Modelling and Testing

1745-6436 (ISSN) 1745-6444 (eISSN)

Vol. 8 241-259


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Strömningsmekanik och akustik