An experimental technique is developed for a vehicle moving steadily in the vicinity of the ground. A towing tank with a steadily advancing carriage is used and the unfavorable effects of the boundary layer on the ground which is inevitable in the case of a wind tunnel are fully removed. Experiments with a box-shaped model and a car model revealed some interesting features of lift, drag and side force at various clearances from the ground. Lift force is the most sensitive to the boundary layer and the lift measured in a wind tunnel may not completely represent lift on the road. The flow with vortices near the bottom surface of the body has one of the most important effects on the forces.
A Water-Basin Test Technique for the Aerodynamic Design of Road Vehicles
Sae Technical Papers
International Congress & Exposition ; 1992
1992-02-01
Conference paper
English
A water-basin test technique for the aerodynamic design of road vehicles
Automotive engineering | 1992
|Aerodynamic Design of Road Vehicles
NTRS | 1985
|AERODYNAMIC TESTING OF ROAD VEHICLES
SAE Technical Papers | 1990
Road Test Aerodynamic Instrumentation
Automotive engineering | 1974
|Road Test Aerodynamic Instrumentation
SAE Technical Papers | 1974
|