---
OA_place: publisher
_id: '19906'
abstract:
- lang: eng
  text: "Flows of ordinary fluids such as water or air transition from laminar to
    turbulent\r\nmotion as the velocity increases. This simple dependence of the flow
    state\r\nsolely on inertia, does not apply to more complex substances such as
    polymericand biofluids which commonly have elastic as well as viscous properties.
    Here\r\nvarious different instabilities and turbulent states can arise at low
    and even\r\nvanishing inertia, while high inertia turbulence counterintuitively
    is suppressed\r\nand its drag strongly reduced. We here show in experiments of
    a viscoelastic\r\nmodel fluid that the phenomena observed at low and high inertia
    have a\r\ncommon origin and that the same dynamical state, elasto-inertial turbulence,\r\npersists
    across four orders of magnitude in Reynolds number, ranging from\r\nvery low inertia,
    all the way to high inertia Maximum drag reduction (MDR)\r\nasymptote. We also
    explore the transitions from Newtonian turbulence to\r\nMDR, and specific cases
    of flow at high polymer concentrations, exploring the\r\nrelationship between
    flow at these wide range of control parameters.\r\n"
acknowledged_ssus:
- _id: M-Shop
acknowledgement: "This work was partially funded by the European Union’s Horizon 2020
  research\r\nand innovation programme under the Marie Skłodowska-Curie grant agreement\r\nNo.
  665385."
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Sarath S
  full_name: Suresh, Sarath S
  id: 3D126CC4-F248-11E8-B48F-1D18A9856A87
  last_name: Suresh
citation:
  ama: 'Suresh SS. Turbulence in polymeric flows : A characterisation of elasto-inertial
    turbulence and the maximum drag reduction asymptote. 2025. doi:<a href="https://doi.org/10.15479/AT-ISTA-19906">10.15479/AT-ISTA-19906</a>'
  apa: 'Suresh, S. S. (2025). <i>Turbulence in polymeric flows : A characterisation
    of elasto-inertial turbulence and the maximum drag reduction asymptote</i>. Institute
    of Science and Technology Austria. <a href="https://doi.org/10.15479/AT-ISTA-19906">https://doi.org/10.15479/AT-ISTA-19906</a>'
  chicago: 'Suresh, Sarath S. “Turbulence in Polymeric Flows : A Characterisation
    of Elasto-Inertial Turbulence and the Maximum Drag Reduction Asymptote.” Institute
    of Science and Technology Austria, 2025. <a href="https://doi.org/10.15479/AT-ISTA-19906">https://doi.org/10.15479/AT-ISTA-19906</a>.'
  ieee: 'S. S. Suresh, “Turbulence in polymeric flows : A characterisation of elasto-inertial
    turbulence and the maximum drag reduction asymptote,” Institute of Science and
    Technology Austria, 2025.'
  ista: 'Suresh SS. 2025. Turbulence in polymeric flows : A characterisation of elasto-inertial
    turbulence and the maximum drag reduction asymptote. Institute of Science and
    Technology Austria.'
  mla: 'Suresh, Sarath S. <i>Turbulence in Polymeric Flows : A Characterisation of
    Elasto-Inertial Turbulence and the Maximum Drag Reduction Asymptote</i>. Institute
    of Science and Technology Austria, 2025, doi:<a href="https://doi.org/10.15479/AT-ISTA-19906">10.15479/AT-ISTA-19906</a>.'
  short: 'S.S. Suresh, Turbulence in Polymeric Flows : A Characterisation of Elasto-Inertial
    Turbulence and the Maximum Drag Reduction Asymptote, Institute of Science and
    Technology Austria, 2025.'
corr_author: '1'
date_created: 2025-06-26T08:39:08Z
date_published: 2025-06-26T00:00:00Z
date_updated: 2026-04-07T12:39:19Z
day: '26'
ddc:
- '530'
degree_awarded: PhD
department:
- _id: GradSch
- _id: BjHo
doi: 10.15479/AT-ISTA-19906
ec_funded: 1
file:
- access_level: open_access
  checksum: 302a07605a9e64ac247c2036d5f5b1cd
  content_type: application/pdf
  creator: cchlebak
  date_created: 2025-06-26T08:40:53Z
  date_updated: 2025-12-27T23:30:02Z
  embargo: 2025-12-27
  file_id: '19907'
  file_name: Thesis_v9_PDFA2b.pdf
  file_size: 6504571
  relation: main_file
- access_level: closed
  checksum: 5d69d10bdacc24c27f02924379405bd9
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  date_updated: 2025-12-27T23:30:02Z
  embargo_to: open_access
  file_id: '19908'
  file_name: Thesis Template - ISTA [istaustriathesis].zip
  file_size: 59092991
  relation: source_file
file_date_updated: 2025-12-27T23:30:02Z
has_accepted_license: '1'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc-sa/4.0/
month: '06'
oa: 1
oa_version: Published Version
page: '82'
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '10299'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Björn
  full_name: Hof, Björn
  id: 3A374330-F248-11E8-B48F-1D18A9856A87
  last_name: Hof
  orcid: 0000-0003-2057-2754
title: 'Turbulence in polymeric flows : A characterisation of elasto-inertial turbulence
  and the maximum drag reduction asymptote'
tmp:
  image: /images/cc_by_nc_sa.png
  legal_code_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC
    BY-NC-SA 4.0)
  short: CC BY-NC-SA (4.0)
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2025'
...