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DNS of Separated Flow: Scale-by-Scale Analysis

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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 Direct Numerical Simulation (DNS) of a turbulent channel containing a bump is carried out to study the turbulence dynamics in the separated region. Our study is intended to fill the gap among the idealised conditions, e.g. plane channel flows typically addressed in literature and the actual flow geometries where the effects of wall curvature and the presence of bluff bodies immediately generate a substantial separated flow region in the bulk of the flow and produce turbulent wakes behind the bluff body. Such configuration allows retaining, with the minimum level of complexity, all the basic features of separated wall-bounded flows such as the presence of the recirculating region that acts as the main energy source for the turbulent velocity fluctuations in the bulk of the flow and in the wake behind the bump.

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Acknowledgements

The research leading to these results has received funding from the European Research Council under the ERC Grant Agreement no. 339446. PRACE, under grant no. 2014112647, has awarded access to resource FERMI based in Bologna, Italy.

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Authors and Affiliations

  1. Department of Mechanical and Aerospace Engineering, Sapienza, University of Rome, via Eudossiana 18, 00184, Rome, Italy

    J.-P. Mollicone, F. Battista, P. Gualtieri & C. M. Casciola

Authors
  1. J.-P. Mollicone
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  2. F. Battista
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  3. P. Gualtieri
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  4. C. M. Casciola
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Corresponding author

Correspondence to J.-P. Mollicone .

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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Mollicone, JP., Battista, F., Gualtieri, P., Casciola, C.M. (2019). DNS of Separated Flow: Scale-by-Scale Analysis. 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_63

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  • DOI: https://doi.org/10.1007/978-3-030-04915-7_63

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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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