Aerodynamic Drag Reduction for a Generic Truck Using Geometrically Optimized Rear Cabin Bumps

The continuous surge in gas prices has raised major concerns about vehicle fuel efficiency, and drag reduction devices offer a promising strategy. In this paper, we investigate the mechanisms by which geometrically optimized bumps, placed on the rear end of the cabin roof of a generic truck, reduce...

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Bibliographic Details
Published in:Journal of engineering (Cairo, Egypt) Egypt), 2015-01, Vol.2015 (2015), p.1-14
Main Authors: Ait Moussa, Abdellah, Yadav, Rohan, Fischer, Justin
Format: Article
Language:English
Subjects:
Aerodynamic drag
Automation
Cabins
Devices
Drag reduction
Mathematical models
Reduction
Trucks
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Summary:The continuous surge in gas prices has raised major concerns about vehicle fuel efficiency, and drag reduction devices offer a promising strategy. In this paper, we investigate the mechanisms by which geometrically optimized bumps, placed on the rear end of the cabin roof of a generic truck, reduce aerodynamic drag. The incorporation of these devices requires proper choices of the size, location, and overall geometry. In the following analysis we identify these factors using a novel methodology. The numerical technique combines automatic modeling of the add-ons, computational fluid dynamics and optimization using orthogonal arrays, and probabilistic restarts. Numerical results showed reduction in aerodynamic drag between 6% and 10%.
ISSN:2314-4904
2314-4912
2314-4912
DOI:10.1155/2015/789475