Ramifications of Test Track Curves On Aerodynamic Prediction for Tractor Trailer Vehicles 2013-01-2460
Comparison of computation fluid dynamics (CFD) analysis of physical testing on curved test tracks highlights that simplifications in both methods can lead to significant error in predicting real world fuel economy performance for heavy duty tractor/trailer vehicles. The importance of understanding the differences in and the accuracy of these test methods have increased recently due to North American greenhouse gas (GHG) regulations and similar developments in other regions requiring manufacturers to assess aerodynamic performance of nearly every tractor sold. This paper discusses lessons learned in enhancing the accuracy of CFD and track predictions of real world aero performance by quantifying the effects of test track curves and challenging simplifying assumptions.
Citation: Mihelic, R. and Ellis, M., "Ramifications of Test Track Curves On Aerodynamic Prediction for Tractor Trailer Vehicles," SAE Technical Paper 2013-01-2460, 2013, https://doi.org/10.4271/2013-01-2460. Download Citation
Author(s):
Rick Mihelic, Matthew Ellis
Affiliated:
Peterbilt Motors, Exa Corp.
Pages: 7
Event:
SAE 2013 Commercial Vehicle Engineering Congress
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Heavy trucks
Test facilities
Greenhouse gas emissions
Test procedures
Computational fluid dynamics
Aerodynamics
Regulations
Trailers
Suppliers
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