11
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: not found

      Direct numerical simulation of turbulent channel flow up to

      ,
      Journal of Fluid Mechanics
      Cambridge University Press (CUP)

      Read this article at

      ScienceOpenPublisher
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          A direct numerical simulation of incompressible channel flow at a friction Reynolds number ( $\mathit{Re}_{{\it\tau}}$ ) of 5186 has been performed, and the flow exhibits a number of the characteristics of high-Reynolds-number wall-bounded turbulent flows. For example, a region where the mean velocity has a logarithmic variation is observed, with von Kármán constant ${\it\kappa}=0.384\pm 0.004$ . There is also a logarithmic dependence of the variance of the spanwise velocity component, though not the streamwise component. A distinct separation of scales exists between the large outer-layer structures and small inner-layer structures. At intermediate distances from the wall, the one-dimensional spectrum of the streamwise velocity fluctuation in both the streamwise and spanwise directions exhibits $k^{-1}$ dependence over a short range in wavenumber $(k)$ . Further, consistent with previous experimental observations, when these spectra are multiplied by $k$ (premultiplied spectra), they have a bimodal structure with local peaks located at wavenumbers on either side of the $k^{-1}$ range.

          Related collections

          Most cited references63

          • Record: found
          • Abstract: not found
          • Article: not found

          Turbulence statistics in fully developed channel flow at low Reynolds number

            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            Direct numerical simulation of turbulent channel flow up to Reτ=590

              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Scaling of the velocity fluctuations in turbulent channels up to Reτ=2003

                Bookmark

                Author and article information

                Journal
                applab
                Journal of Fluid Mechanics
                J. Fluid Mech.
                Cambridge University Press (CUP)
                0022-1120
                1469-7645
                July 10 2015
                June 10 2015
                : 774
                :
                : 395-415
                Article
                10.1017/jfm.2015.268
                db1b640c-b6f3-4ba6-9d69-53c917d78b89
                © 2015
                History

                Comments

                Comment on this article