Due to energy and material considerations, vehicle manufacturers move in the direction of producing smaller and lighter vehicles. With further reductions in the weight of vehicles, aerodynamic forces emerge as a major factor in energy and stability calculations. The situation becomes more important when moving through driving tunnels. Because of the limited space of a driving tunnel, vehicles are usually forced to interfere severely. 1/25-scale models for domestic bus and passenger car are employed. Three-dimensional pressure measurements are recorded for analyzing the aerodynamic behavior and calculating the drag coefficient. Measurements are supported by numerical calculations and flow visualization. Results show that vehicle interference has a favorable effect on reducing drag. However, stability considerations should be noticed.
Aerodynamics of Vehicles Through Driving Tunnels - Experimental Study of Interference and Drag Reduction
Sae Technical Papers
SAE 2001 World Congress ; 2001
2001-03-05
Conference paper
English
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