Effect of Different Parameters on the Drag Coefficient for Commercial Vehicles | ||||
| International Conference on Aerospace Sciences and Aviation Technology | ||||
| Article 8, Volume 9, ASAT Conference, 8-10 May 2001, May 2001, Page 1-19 PDF (2.34 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/asat.2001.24764 | ||||
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| Authors | ||||
| Abdel Azim A. F.1; Abdel Gawad A. F.2 | ||||
| 1Chairman, Mechanical Power Engineering Dpt., Faculty of Engineering, Zagazig University, Zagazig, Egypt. | ||||
| 2Assistant Professor, Mechanical Power Engineering Dpt., Faculty of Engineering, Zagazig University, Zagazig, Egypt . | ||||
| Abstract | ||||
| Large commercial vehicles (e.g. truck-trailer combination), due to their function, are bluff bodies by nature. The truck-trailer combination usually gives a drag coefficient that is less than that for a trailer alone. The interference between the commercial vehicles and other small vehicles is of primary importance especially when moving in driving tunnels that are characterized by their limited space. 1/19-scale models for commercial vehicles are employed in the experimental work performed here. Three-dimensional pressure measurements are recorded for analyzing the aerodynamic behavior and calculating the drag coefficient. Add-on devices (deflectors) are used. Measurements are supported by both numerical calculations and flow visualization. Results show that add-on devices play a very important role in improving the aerodynamic characteristics of commercial vehicles. | ||||
| Keywords | ||||
| Aerodynamics; Commercial Vehicles; Deflectors; Overtaking; Driving Tunnels; and Drag | ||||
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