---
res:
  bibo_abstract:
  - Turbulence generally arises in shear flows if velocities and hence, inertial forces
    are sufficiently large. In striking contrast, viscoelastic fluids can exhibit
    disordered motion even at vanishing inertia. Intermediate between these cases,
    a state of chaotic motion, “elastoinertial turbulence” (EIT), has been observed
    in a narrow Reynolds number interval. We here determine the origin of EIT in experiments
    and show that characteristic EIT structures can be detected across an unexpectedly
    wide range of parameters. Close to onset, a pattern of chevron-shaped streaks
    emerges in qualitative agreement with linear and weakly nonlinear theory. However,
    in experiments, the dynamics remain weakly chaotic, and the instability can be
    traced to far lower Reynolds numbers than permitted by theory. For increasing
    inertia, the flow undergoes a transformation to a wall mode composed of inclined
    near-wall streaks and shear layers. This mode persists to what is known as the
    “maximum drag reduction limit,” and overall EIT is found to dominate viscoelastic
    flows across more than three orders of magnitude in Reynolds number.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: George H
      foaf_name: Choueiri, George H
      foaf_surname: Choueiri
      foaf_workInfoHomepage: http://www.librecat.org/personId=448BD5BC-F248-11E8-B48F-1D18A9856A87
  - foaf_Person:
      foaf_givenName: Jose M
      foaf_name: Lopez Alonso, Jose M
      foaf_surname: Lopez Alonso
      foaf_workInfoHomepage: http://www.librecat.org/personId=40770848-F248-11E8-B48F-1D18A9856A87
    orcid: 0000-0002-0384-2022
  - foaf_Person:
      foaf_givenName: Atul
      foaf_name: Varshney, Atul
      foaf_surname: Varshney
      foaf_workInfoHomepage: http://www.librecat.org/personId=2A2006B2-F248-11E8-B48F-1D18A9856A87
    orcid: 0000-0002-3072-5999
  - foaf_Person:
      foaf_givenName: Sarath
      foaf_name: Sankar, Sarath
      foaf_surname: Sankar
  - foaf_Person:
      foaf_givenName: Björn
      foaf_name: Hof, Björn
      foaf_surname: Hof
      foaf_workInfoHomepage: http://www.librecat.org/personId=3A374330-F248-11E8-B48F-1D18A9856A87
    orcid: 0000-0003-2057-2754
  bibo_doi: 10.1073/pnas.2102350118
  bibo_issue: '45'
  bibo_volume: 118
  dct_date: 2021^xs_gYear
  dct_identifier:
  - UT:000720926900019
  dct_isPartOf:
  - http://id.crossref.org/issn/0027-8424
  - http://id.crossref.org/issn/1091-6490
  dct_language: eng
  dct_publisher: National Academy of Sciences@
  dct_subject:
  - multidisciplinary
  - elastoinertial turbulence
  - viscoelastic flows
  - elastic instability
  - drag reduction
  dct_title: Experimental observation of the origin and structure of elastoinertial
    turbulence@
  fabio_hasPubmedId: ' 34732570'
...