Data underlying the publication: Direct numerical simulation of turbulent open channel flow
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==============================================================================DNS DATA OF TURBULENT CLOSED AND OPEN CHANNEL FLOWIN 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.deReferences: Bauer, C., Sakai, Y., Uhlmann, M. (2024). <em>Direct numerical simulation of turbulent open channel flow: Streamwise turbulence intensity scaling and its relation to large-scale coherent motions.</em> Progress in turbulence X, Springer proceedings in physics 404, p. 311-317, https://doi.org/10.1007/978-3-031-55924-2_42Bauer, C., Sakai, Y., Uhlmann, M. (2025). <em>How far does the influence of the free surface extend in turbulent open channel flow?</em>. Flow Turbulence Combust. https://doi.org/10.1007/s10494-025-00665-4Numerical Method: Kim, Moin & Moser, 1987, J. Fluid Mech. vol 177, 133-166 ---------------------------------------------------------------------------------------------------------------------------- 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.----------------------------------------------------------------------------------------------------------------------------For detailed information see data-sheet-ocf.pdf and data-sheet-ccf.pdf
