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Boundary Layer Stability with Embedded Rotating Cylindrical Roughness Element

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New Results in Numerical and Experimental Fluid Mechanics XII (DGLR 2018)

Part of the book series: Notes on Numerical Fluid Mechanics and Multidisciplinary Design ((NNFM,volume 142))

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Abstract

Linear stability theory (LST) and direct numerical simulations (DNS) are used to investigate the instability of boundary layer flow with an embedded rotating cylindrical roughness element. The non-linear formulation of the perturbation evolution is implemented and solved with the second-order finite volume solver OpenFOAM, which is validated by comparison with LST prediction with respect to Tollmien-Schlichting waves. Dynamic mode decomposition (DMD) is then used to obtain the frequency separated disturbance modes. To obtain an insight into the instability mechanism, perturbation kinetic energy analysis is followed. Results reveal the possible stabilization effect of such a flow setup.

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Acknowledgements

The authors gratefully acknowledge the financial support from the China Scholarship Council (No. 201406280033). Computational resources provided by the federal high-performance computing center Stuttgart (HLRS) is kindly acknowledged.

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Authors and Affiliations

  1. Institute of Aerodynamics and Gas Dynamics, Pfaffenwaldring 21, 70569, Stuttgart, Germany

    Yongxiang Wu & Ulrich Rist

Authors
  1. Yongxiang Wu
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  2. Ulrich Rist
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Corresponding author

Correspondence to Yongxiang Wu .

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Editors and Affiliations

  1. Deutsches Zentrum für Luft- und Raumfahrt, Institut für Aerodynamik und Strömungstechnik, Göttingen, Niedersachsen, Germany

    Andreas Dillmann

  2. Airbus Operations GmbH, Bremen, Bremen, Germany

    Gerd Heller

  3. Institut für Aerodynamik und Gasdynamik, Universität Stuttgart, Stuttgart, Baden-Württemberg, Germany

    Ewald Krämer

  4. Deutsches Zentrum für Luft- und Raumfahrt, Institut für Aerodynamik und Strömungstechnik, Göttingen, Niedersachsen, Germany

    Claus Wagner

  5. Fachgebiet Strömungslehre und Aerodynamik, Technische Universität Darmstadt, Darmstadt, Hessen, Germany

    Cameron Tropea

  6. Fachgebiet Strömungslehre und Aerodynamik, Technische Universität Darmstadt, Darmstadt, Hessen, Germany

    Suad Jakirlić

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Wu, Y., Rist, U. (2020). Boundary Layer Stability with Embedded Rotating Cylindrical Roughness Element. In: Dillmann, A., Heller, G., Krämer, E., Wagner, C., Tropea, C., Jakirlić, S. (eds) New Results in Numerical and Experimental Fluid Mechanics XII. DGLR 2018. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 142. Springer, Cham. https://doi.org/10.1007/978-3-030-25253-3_27

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  • DOI: https://doi.org/10.1007/978-3-030-25253-3_27

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-25252-6

  • Online ISBN: 978-3-030-25253-3

  • eBook Packages: EngineeringEngineering (R0)

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