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New Results in Numerical and Experimental Fluid Mechanics IX pp 303–311Cite as

Highly-Resolved Numerical Simulations of High Rayleigh and Reynolds Number Indoor Ventilation in a Generic Room

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Part of the book series: Notes on Numerical Fluid Mechanics and Multidisciplinary Design ((NNFM,volume 124))

Abstract

We conduct Direct Numerical Simulations (DNS) and Large Eddy Simulations (LES) of turbulent mixed convection in parallelepiped convective cells with heated parallelepiped obstacles inside, which represents indoor ventilation in a generic room. The considered Reynolds number \({\mathcal {R}}e\) based on the velocity of the inlet flow and the width of the inlet ducts is up to \({\mathcal {R}}e=1.0\times 10^3\) (and \(1.5\times 10^5\) if based on the height of the cell) and the Grashof number \({\mathcal {G}}r\) based on the height of the generic room and the temperature difference of the heated obstacles and the cooled inlet flows is up to \({\mathcal {G}}r=2.8\times 10^{10}\). The flow for \({\mathcal {R}}e=1.5\times 10^5\), \({\mathcal {G}}r=2.8\times 10^{10}\) and the length of the domain \(\widehat{L}=5\) m is studied by means of LES based on the Smagorinsky model. The results of the simulations reveal a strong dependency of the global flow structures on the Grashof number \({\mathcal {G}}r\), Archimedes number \({\mathcal {A}}r\) and the length of the domain.

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Authors and Affiliations

  1. German Aerospace Center (DLR), Institute of Aerodynamics and Flow Technology, Göttingen, Germany

    Olga Shishkina & Claus Wagner

Authors
  1. Olga Shishkina
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  2. Claus Wagner
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Correspondence to Olga Shishkina .

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Editors and Affiliations

  1. Institut für Aerodynamik und Strömungstechnik, German Aerospace Center (DLR), Göttingen, Germany

    Andreas Dillmann

  2. Airbus Deutschland, Bremen, Germany

    Gerd Heller

  3. Institut für Aerodynamik und Gasdynamik, University of Stuttgart, Stuttgart, Germany

    Ewald Krämer

  4. Deutsches Zentrum für Luft-und Raumfahrt (DLR), Institut für Aerodynamik und Strömungstechnik, Göttingen, Germany

    Hans-Peter Kreplin

  5. Institut für Luft- und Raumfahrt, TU Berlin, Berlin, Germany

    Wolfgang Nitsche

  6. Institut für Aerodynamik und Gasdynamik, University of Stuttgart, Stuttgart, Germany

    Ulrich Rist

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Shishkina, O., Wagner, C. (2014). Highly-Resolved Numerical Simulations of High Rayleigh and Reynolds Number Indoor Ventilation in a Generic Room. In: Dillmann, A., Heller, G., Krämer, E., Kreplin, HP., Nitsche, W., Rist, U. (eds) New Results in Numerical and Experimental Fluid Mechanics IX. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 124. Springer, Cham. https://doi.org/10.1007/978-3-319-03158-3_31

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  • DOI: https://doi.org/10.1007/978-3-319-03158-3_31

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-03157-6

  • Online ISBN: 978-3-319-03158-3

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