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Numerical Study of the Flow Around \(25^{\circ }\) Ahmed Bodies with Hybrid Turbulence Models

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Direct and Large-Eddy Simulation XI

Part of the book series: ERCOFTAC Series ((ERCO,volume 25))

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Abstract

The aim of this work is to explore the efficiency of different improved Reynolds-Averaged Navier-Stokes (RANS) and hybrid LES/RANS approaches to study the external aerodynamics related to ground vehicles. These computational techniques should be able to build a bridge between accuracy and robustness in order to compute complex high Reynolds number bluff-body flows like ground vehicle flows. Bluff body flows are characterized by separated regions, containing wide spectra of turbulent scales. These regions, especially in the wake behind the body, are responsible for the main part of the drag forces. An accurate computation of these areas is a difficult task.

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Authors and Affiliations

  1. Equipe M2N, CNAM Paris, 292 rue Saint-Martin, 75003, Paris, France

    F. Delassaux & I. Mortazavi

  2. Groupe PSA, Route de Gisy, 78943, Velizy-Villacoublay, France

    V. Herbert & C. Ribes

Authors
  1. F. Delassaux
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  2. I. Mortazavi
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  3. V. Herbert
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  4. C. Ribes
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Corresponding author

Correspondence to F. Delassaux .

Editor information

Editors and Affiliations

  1. Dipartimento di Ingegneria Civile e Industriale, Università di Pisa, Pisa, Italy

    Maria Vittoria Salvetti

  2. Dipartimento di Ingegneria Civile e Ambientale, Università degli studi di Trieste, Trieste, Italy

    Vincenzo Armenio

  3. Institut für Strömungsmechanik, Technische Universität Dresden, Dresden, Germany

    Jochen Fröhlich

  4. Faculty of Electrical Engineering, Mathematics and Computer Science, Multiscale Modeling and Simulation, University of Twente, Enschede, The Netherlands

    Bernard J. Geurts

  5. Department of Mechanical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands

    Hans Kuerten

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Delassaux, F., Mortazavi, I., Herbert, V., Ribes, C. (2019). Numerical Study of the Flow Around \(25^{\circ }\) Ahmed Bodies with Hybrid Turbulence Models. In: Salvetti, M., Armenio, V., Fröhlich, J., Geurts, B., Kuerten, H. (eds) Direct and Large-Eddy Simulation XI. ERCOFTAC Series, vol 25. Springer, Cham. https://doi.org/10.1007/978-3-030-04915-7_67

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  • DOI: https://doi.org/10.1007/978-3-030-04915-7_67

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-04914-0

  • Online ISBN: 978-3-030-04915-7

  • eBook Packages: EngineeringEngineering (R0)

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