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RANS Simulations of Passive and Active Drag Reduction Devices for a Road Vehicle

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The Aerodynamics of Heavy Vehicles: Trucks, Buses, and Trains

Part of the book series: Lecture Notes in Applied and Computational Mechanics ((LNACM,volume 19))

Abstract

Numerical simulations of a truck-type configuration are carried out with the aim to investigate the effectiveness of various drag reduction devices. Unsteady Reynolds-Averaged Navier-Stokes equations are solved to capture the periodic wake motion at the base of the model and comparisons with available measurements show satisfactory agreement. Two passive devices are applied to the back of the model to investigate their effect on the pressure recovery and the base pressure. Up to 15% drag reduction is obtained using a boattail appendix. In addition, a Coanda jet system is designed and simulated. In this case the amount of drag reduction is directly related to the amount of injected mass and a zero drag condition can be obtained.

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References

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Author information

Authors and Affiliations

  1. Center for Turbulence Research, Stanford University, Stanford, CA, 94305-3030, USA

    G. Iaccarino, B. de Maio & R. Verzicco

  2. General Motors Corporation, Warren, MI, 48090-9055, USA

    B. Khalighi

Authors
  1. G. Iaccarino
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  2. B. de Maio
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  3. R. Verzicco
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  4. B. Khalighi
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Editor information

Editors and Affiliations

  1. Center for Advanced Fluid Dynamics Applications, Lawrence Livermore National Laboratory, P.O. Box 808, L-098, 94551, Livermore, CA, USA

    Rose McCallen Ph.D.

  2. Department of Aerospace and Mechanical Engineering, Univerity of Southern California, 90089-1453, Los Angeles, CA, USA

    Fred Browand Ph.D.

  3. Research Center MS 260-1, Experimental Aerophysics Branch, NASA-Ames, 94035, Moffett Field, CA, USA

    James Ross Ph.D.

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© 2004 Springer-Verlag Berlin Heidelberg

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Iaccarino, G., de Maio, B., Verzicco, R., Khalighi, B. (2004). RANS Simulations of Passive and Active Drag Reduction Devices for a Road Vehicle. In: McCallen, R., Browand, F., Ross, J. (eds) The Aerodynamics of Heavy Vehicles: Trucks, Buses, and Trains. Lecture Notes in Applied and Computational Mechanics, vol 19. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-44419-0_25

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  • DOI: https://doi.org/10.1007/978-3-540-44419-0_25

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-53586-4

  • Online ISBN: 978-3-540-44419-0

  • eBook Packages: Springer Book Archive

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