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DOI: 10.4121/88678f02-2a34-4452-8534-6361fc34d06b

Bauer, Christian; Sakai, Yoshiyuki; Uhlmann, Markus (2025): Data underlying the publication: Direct numerical simulation of turbulent open channel flow. Version 4. 4TU.ResearchData. dataset. https://doi.org/10.4121/88678f02-2a34-4452-8534-6361fc34d06b.v4

Version 3 - 2024-09-20 Version 2 - 2024-09-20 Version 1 - 2023-07-13

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Categories

• Civil Engineering
• Mechanical Engineering
• Classical Physics
• Aerospace Engineering
• Physical and Chemical Conditions of Water
• Engineering
• Physical Sciences
• Environment

Keywords

CCF correlations direct numerical simulation DNS free-slip boundary OCF plane channel flow spectra turbulence statistics turbulent open channel flow velocity profile

Licence

CC BY-NC 4.0

Interoperability

• IIIF Manifest
• RO-Crate Metadata

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RefWorks BibTeX Reference Manager Endnote DataCite NLM DC CFF

by Christian Bauer, Yoshiyuki Sakai, Markus Uhlmann

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DNS DATA OF TURBULENT CLOSED AND OPEN CHANNEL FLOW

IN BOXES OF Lx/h = 12pi, Lz/h = 4pi

FOR Re_tau = 200,400,600,900

==============================================================================

Authors: C. Bauer, Y. Sakai & M. Uhlmann

correspondence: christian.bauer@dlr.de

References:

Bauer, C., Sakai, Y., Uhlmann, M. (2024). Direct numerical simulation of turbulent open channel flow: Streamwise turbulence intensity scaling and its relation to large-scale coherent motions. Progress in turbulence X, Springer proceedings in physics 404, p. 311-317, https://doi.org/10.1007/978-3-031-55924-2_42

Bauer, C., Sakai, Y., Uhlmann, M. (2025). How far does the influence of the free surface extend in turbulent open channel flow?. Flow Turbulence Combust. https://doi.org/10.1007/s10494-025-00665-4

Numerical Method: Kim, Moin & Moser, 1987, J. Fluid Mech. vol 177, 133-166

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The data was obtained from direct numerical simulations of open and closed channel flow using a pseudo-spectral method which solves the wall-normal velocity/vorticity formulation of the Navier-Stokes equation introduced by Kim et al (1987). The flow domain contains Nx*Ny*Nz grid points with equidistant grid spacing in x and z direction and a Chebyshev-Gauss-Lobatto (CGL) grid in y direction. Note that the open channel flow simulations feature a grid refinement towards both the no-slip and the free-slip boundary condition.

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For detailed information see data-sheet-ocf.pdf and data-sheet-ccf.pdf

History

• 2023-03-22 first online

• 2025-06-17 published, posted

Publisher

4TU.ResearchData

Format

tarballs/ASCII

Associated peer-reviewed publication

Direct Numerical Simulation of Turbulent Open Channel Flow: Streamwise Turbulence Intensity Scaling and Its Relation to Large-Scale Coherent Motions

References

• https://arxiv.org/abs/2212.00718
• https://link.springer.com/article/10.1007/s10494-025-00665-4

Same as

https://www.iwu.kit.edu/nfm/dns_data/channel/smooth/open/

Organizations

German Aerospace Center (DLR)
Technical University Munich (TUM)
Karlsruhe Institute of Technology (KIT)