---
res:
  bibo_abstract:
  - 'We report the results of an experimental investigation into the decay of turbulence
    in plane Couette–Poiseuille flow using ‘quench’ experiments where the flow laminarises
    after a sudden reduction in Reynolds number Re. Specifically, we study the velocity
    field in the streamwise–spanwise plane. We show that the spanwise velocity containing
    rolls decays faster than the streamwise velocity, which displays elongated regions
    of higher or lower velocity called streaks. At final Reynolds numbers above 425,
    the decay of streaks displays two stages: first a slow decay when rolls are present
    and secondly a more rapid decay of streaks alone. The difference in behaviour
    results from the regeneration of streaks by rolls, called the lift-up effect.
    We define the turbulent fraction as the portion of the flow containing turbulence
    and this is estimated by thresholding the spanwise velocity component. It decreases
    linearly with time in the whole range of final Re. The corresponding decay slope
    increases linearly with final Re. The extrapolated value at which this decay slope
    vanishes is Reaz≈656±10, close to Reg≈670 at which turbulence is self-sustained.
    The decay of the energy computed from the spanwise velocity component is found
    to be exponential. The corresponding decay rate increases linearly with Re, with
    an extrapolated vanishing value at ReAz≈688±10. This value is also close to the
    value at which the turbulence is self-sustained, showing that valuable information
    on the transition can be obtained over a wide range of Re.@eng'
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: T.
      foaf_name: Liu, T.
      foaf_surname: Liu
  - foaf_Person:
      foaf_givenName: B.
      foaf_name: Semin, B.
      foaf_surname: Semin
  - foaf_Person:
      foaf_givenName: Lukasz
      foaf_name: Klotz, Lukasz
      foaf_surname: Klotz
      foaf_workInfoHomepage: http://www.librecat.org/personId=2C9AF1C2-F248-11E8-B48F-1D18A9856A87
    orcid: 0000-0003-1740-7635
  - foaf_Person:
      foaf_givenName: R.
      foaf_name: Godoy-Diana, R.
      foaf_surname: Godoy-Diana
  - foaf_Person:
      foaf_givenName: J. E.
      foaf_name: Wesfreid, J. E.
      foaf_surname: Wesfreid
  - foaf_Person:
      foaf_givenName: T.
      foaf_name: Mullin, T.
      foaf_surname: Mullin
  bibo_doi: 10.1017/jfm.2021.89
  bibo_volume: 915
  dct_date: 2021^xs_gYear
  dct_identifier:
  - UT:000629677500001
  dct_isPartOf:
  - http://id.crossref.org/issn/0022-1120
  - http://id.crossref.org/issn/1469-7645
  dct_language: eng
  dct_publisher: Cambridge University Press@
  dct_title: Decay of streaks and rolls in plane Couette-Poiseuille flow@
...