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Experimental Investigation of the Ground Transportation Systems (GTS) Project for Heavy Vehicle Drag Reduction
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Abstract
A wind tunnel experimental research program was conducted on a heavily instrumented Ground Transportation System (GTS) vehicle. The GTS baseline model represented a generic 1:8 scale Class-8 van-type tractor trailer geometry. Five base drag reduction add-on devices, instrumented with surface pressure ports, were also tested. These add-on devices included two ogive boattail shapes and three slant geometry devices.
Six component force and moment data, surface pressure contours, and wake velocity surveys are presented for each configuration along with qualitative insights gained from flow visualization.
This wind tunnel program was designed to complement a parallel research effort in computational fluid dynamics (CFD) which modeled many of these same vehicle geometries. The wind tunnel data are documented and archived in ASCII format on floppy discs and available to researchers interested in further analysis or comparison to other CFD solutions.
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Authors
Citation
Croll, R., Gutierrez, W., Hassan, B., Suazo, J. et al., "Experimental Investigation of the Ground Transportation Systems (GTS) Project for Heavy Vehicle Drag Reduction," SAE Technical Paper 960907, 1996, https://doi.org/10.4271/960907.Also In
Vehicle Aerodynamics: Wind Tunnels, Cfd, Aeroacoustics, and Ground Transportation Systems
Number: SP-1145; Published: 1996-02-01
Number: SP-1145; Published: 1996-02-01
References
- Gutierrez, W. T. Hassan, B. Croll, R.H. Rutledge, W. H. “Aerodynamics Overview of the Ground Transportation Systems (GTS) Project for Heavy Vehicle Drag Reduction” SAE Publication 960906 SP-1145 1996 SAE International Congress and Exposition February 1996
- Hassan, B. Gutierrez, W. T. Wolfe, W. P. Walker, M. A. Ruefer, B. G. Hurt, J. W. “Numerical Prediction of Aerodynamic Drag for Heavy Ground Transportation Vehicles,” AIAA 95-1913 13 th AIAA Applied Aerodynamics Conference June 19-22 1995
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- “SAE Wind Tunnel Test Procedure for Trucks and Busses,” SAE J1252 JUL81 SAE Recommended Practice July 1981
- Steen, G. “Subsonic Wind Tunnel Test of the Sandia National Laboratories Ground Transportation Vehicle,” TEES Report No. TR-9514 Texas A&M University College Station, TX July 1995