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Improving Automotive Fuel Efficiency with Deturbulator Tape
ISSN: 0148-7191, e-ISSN: 2688-3627
Published August 05, 2007 by SAE International in United States
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A new method for reducing aerodynamic drag of trucks and vans has been developed. It uses Deturbulator tape to transform separated turbulent wakes into stagnant virtually solid streamlining extensions attached to the vehicle. Constrained mode flow-induced surface oscillations of the 100-μm thick, passive, flexible-surface Deturbulator tape attenuates turbulent mixing by driving the turbulence to a pre-selected high frequency in the dissipation range. Wind tunnel tests indicated 80% drag reduction. Road tests on a minivan and pickup truck showed 15-20% increased highway fuel economy due to reduced drag. 6% reduction in overall fuel consumption was obtained for an operational Class-8tractor-semitrailer.
CitationSinha, S. and Sinha, S., "Improving Automotive Fuel Efficiency with Deturbulator Tape," SAE Technical Paper 2007-01-3458, 2007, https://doi.org/10.4271/2007-01-3458.
- ClarkeR.M., “Truck Manufacturers Program to Review Aerodynamic Drag” DOE Heavy Vehicle Systems Optimization Merit Review, April 2006.
- JohnsonR.H., “A Flight Test Evaluation of the Sinha Wing Performance Enhancing Deturbulators,” SOARING and Motorgliding Magazine, The Journal of the Soaring Society of America Inc., Vol 71., No.5, May 2007, pp. 35-41.
- ManglaN.L., and SinhaS.K., 2004, “Controlling Dynamic Stall with an Active Flexible Wall” Amer”. Soc of AIAA Paper AIAA-2004-2325; 2nd AIAA Flow Control Conf, Portland, June 28-July 1, 2004.
- SinhaS.K.; “System for Efficient Control of Flow Separation using a Driven Flexible Wall,” U.S. Patent No. 5,961,080, October 5,1999.
- SinhaS.K., 2001a “Flow Separation Control with Microflexural Wall Vibrations,” Journal of Aircraft, (Vol.38, No.3., May-June-2001) pp. 496-503.
- SinhaS.K., 2001b “Exploring Separating Boundary Layers With a Flexible Wall Transducer Array,”. Proc. ASME FEDSM-01, 2001 ASME Fluids Eng Summer Meet, New Orleans, LA, May 29-June 1, 2001.
- SinhaS.K., “System and Method for Using a Flexible Composite Surface for Pressure-Drop Free Heat Transfer Enhancement and Flow Drag Reduction,” U.S. Patent Applications 10/355,346, filed Jan. 31, 2003.
- SinhaS.K., “Optimizing Wing Lift to Drag Ratio Enhancement with Flexible-Wall Turbulence Control”, AIAA Paper No. 2007-4425, 25th. AIAA Applied Aerodynamics Conference, June 25-28, 2007, Miami, FL, U.S.A.
- SinhaS.K., and RavandeS.V., “Sailplane Performance Improvement Using a Flexible Composite Surface Deturbulator,” AIAA Paper 20060447, 44th AIAA Aerospace Sciences Meeting, Reno, NV, Jan. 9-12, 2006a.
- SinhaS.K., and RavandeS.V., “Drag Reduction of Natural Laminar Flow Airfoils with a Flexible Surface Deturbulator”, AIAA Paper 2006-3030, 3rd. AIAA Flow Control Conference, San Francisco, CA, June 5-8, 2006b.
- SinhaS.L., “Can Flow Control Devices Significantly Reduce Drag?” 2005 Intel Science and Engineering Fair, Project EN 074, Phoenix, Arizons, May 2005.
- SinhaS., and SinhaS.K., “Method of Reducing Drag and Increasing Lift due to Flow of a Fluid over Solid Objects”, International Patent Application No.: PCT/US2006/011430, international Publication Number WO 2006/105174 A2 with an International Publication Date of 5 October 2006.
- RichardWood M.. “Simple and Low Cost Aerodynamic Reduction Devices for Tractor Trailer Trucks”, Society of Automotive Engineers, Paper SAE 2003-01-0377, 2003.
- www.fueleconomy.gov (U.S. DOE and EPA)