Preliminary Investigation of the Influence of a Ground-Plane Boundary Layer on the Aerodynamic Characteristics of Road Vehicle Models Tested Over a Fixed Ground 960675
Results from a series of experimental measurements are presented in order to investigate the influence of the ground-plane boundary layer on the overall characteristics of a scale model road vehicle. The wind tunnel model is a generic bluff body which has a streamlined forebody, simple wheel representation and interchangeable rear end sections.
The aerodynamic forces and moments were measured via an external 3-component balance at a free stream velocity of 24 m/s. corresponding to Reynolds number of 5.5 × 105 based on model length, over a range of ride heights and yaw angles. The ground plane boundary layer thickness was varied artificially. The influence of wheels and underbody roughness were also investigated.
Citation: Ahmadi, M. and Garry, K., "Preliminary Investigation of the Influence of a Ground-Plane Boundary Layer on the Aerodynamic Characteristics of Road Vehicle Models Tested Over a Fixed Ground," SAE Technical Paper 960675, 1996, https://doi.org/10.4271/960675. Download Citation
M. Ahmadi, K. P. Garry
International Congress & Exposition
Vehicle Aerodynamics: Wind Tunnels, Cfd, Aeroacoustics, and Ground Transportation Systems-SP-1145