{
  "id": "1706.07774",
  "version": "v1",
  "published": "2017-06-23T16:40:02.000Z",
  "updated": "2017-06-23T16:40:02.000Z",
  "title": "Attached flow structure and streamwise energy spectra in a turbulent boundary layer",
  "authors": [
    "Sricharan Srinath",
    "J. C Vassilicos",
    "Christophe Cuvier",
    "Jean-Philippe Laval",
    "Michel Stanislas",
    "Jean-Marc Foucaut"
  ],
  "categories": [
    "physics.flu-dyn"
  ],
  "abstract": "On the basis of (i) Particle Image Velocimetry data of a Turbulent Boundary Layer with large field of view and good spatial resolution and (ii) a mathematical relation between the energy spectrum and specifically modeled flow structures, we show that the scalings of the streamwise energy spectrum $E_{11}(k_{x})$ in a wavenumber range directly affected by the wall are determined by wall-attached eddies but are not given by the Townsend-Perry attached eddy model. Instead, $E_{11}(k_{x}) \\sim k_{x}^{-1-p}$ where $p$ varies smoothly with distance to the wall from negative values in the buffer layer to positive values in the inertial layer. The exponent $p$ characterises the turbulence levels inside wall-attached streaky structures conditional on the length of these structures.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-06-23T16:40:02.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "turbulent boundary layer",
      "streamwise energy spectrum",
      "attached flow structure",
      "wall-attached streaky structures conditional",
      "inside wall-attached streaky structures"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}