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Effects of Rotation on the Oscillatory Flow Over Ripples

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Direct and Large-Eddy Simulation IX

Part of the book series: ERCOFTAC Series ((ERCO,volume 20))

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Abstract

Large-eddy simulations (LES) of oscillating turbulent boundary layers, over a rippled bed, subjected to frame rotation are presented. This flow is archetypal of a bottom-ocean, tidally driven boundary layer developing over sand dunes. A forcing-type immersed boundary method (IBM) is used to represent the solid bed and the filtered structure function model for the sub-grid stresses. Three different rotation patterns were examined, each one corresponding to different geographic latitudes. The effect of ripples was found to significantly modify the elliptical patterns and the phase of the Ekman layers generating between the ripple crests.

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Authors and Affiliations

  1. Computational Sciences Laboratory UCY-CompSci, Department of Mechanical and Manufacturing Engineering, NIREAS International Water Research Center, University of Cyprus, Nicosia, Cyprus

    D. G. E. Grigoriadis

  2. Dipartimento di Ingegneria e Architettura, Universitá di Trieste, Piazzale Europa 1, 34127, Trieste, Italy

    V. Armenio

Authors
  1. D. G. E. Grigoriadis
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  2. V. Armenio
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Corresponding author

Correspondence to D. G. E. Grigoriadis .

Editor information

Editors and Affiliations

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

    Jochen Fröhlich

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

    Hans Kuerten

  3. Faculty EEMCS, Multiscale Modeling and Simulation, University of Twente, Enschede, The Netherlands

    Bernard J. Geurts

  4. Dipartimento di Ingegneria Civile ed Ambientale, Università di Trieste, Trieste, Italy

    Vincenzo Armenio

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© 2015 Springer International Publishing Switzerland

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Grigoriadis, D.G.E., Armenio, V. (2015). Effects of Rotation on the Oscillatory Flow Over Ripples. In: Fröhlich, J., Kuerten, H., Geurts, B., Armenio, V. (eds) Direct and Large-Eddy Simulation IX. ERCOFTAC Series, vol 20. Springer, Cham. https://doi.org/10.1007/978-3-319-14448-1_59

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  • DOI: https://doi.org/10.1007/978-3-319-14448-1_59

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-14447-4

  • Online ISBN: 978-3-319-14448-1

  • eBook Packages: EngineeringEngineering (R0)

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