---
_id: '14466'
abstract:
- lang: eng
  text: The first long-lived turbulent structures observable in planar shear flows
    take the form of localized stripes, inclined with respect to the mean flow direction.
    The dynamics of these stripes is central to transition, and recent studies proposed
    an analogy to directed percolation where the stripes’ proliferation is ultimately
    responsible for the turbulence becoming sustained. In the present study we focus
    on the internal stripe dynamics as well as on the eventual stripe expansion, and
    we compare the underlying mechanisms in pressure- and shear-driven planar flows,
    respectively, plane-Poiseuille and plane-Couette flow. Despite the similarities
    of the overall laminar–turbulence patterns, the stripe proliferation processes
    in the two cases are fundamentally different. Starting from the growth and sustenance
    of individual stripes, we find that in plane-Couette flow new streaks are created
    stochastically throughout the stripe whereas in plane-Poiseuille flow streak creation
    is deterministic and occurs locally at the downstream tip. Because of the up/downstream
    symmetry, Couette stripes, in contrast to Poiseuille stripes, have two weak and
    two strong laminar turbulent interfaces. These differences in symmetry as well
    as in internal growth give rise to two fundamentally different stripe splitting
    mechanisms. In plane-Poiseuille flow splitting is connected to the elongational
    growth of the original stripe, and it results from a break-off/shedding of the
    stripe's tail. In plane-Couette flow splitting follows from a broadening of the
    original stripe and a division along the stripe into two slimmer stripes.
acknowledgement: E.M. acknowledges funding from the ISTplus fellowship programme.
  G.Y. and B.H. acknowledge a grant from the Simons Foundation (662960, BH).
article_number: A21
article_processing_charge: Yes (via OA deal)
article_type: original
arxiv: 1
author:
- first_name: Elena
  full_name: Marensi, Elena
  id: 0BE7553A-1004-11EA-B805-18983DDC885E
  last_name: Marensi
  orcid: 0000-0001-7173-4923
- first_name: Gökhan
  full_name: Yalniz, Gökhan
  id: 66E74FA2-D8BF-11E9-8249-8DE2E5697425
  last_name: Yalniz
  orcid: 0000-0002-8490-9312
- first_name: Björn
  full_name: Hof, Björn
  id: 3A374330-F248-11E8-B48F-1D18A9856A87
  last_name: Hof
  orcid: 0000-0003-2057-2754
citation:
  ama: Marensi E, Yalniz G, Hof B. Dynamics and proliferation of turbulent stripes
    in plane-Poiseuille and plane-Couette flows. <i>Journal of Fluid Mechanics</i>.
    2023;974. doi:<a href="https://doi.org/10.1017/jfm.2023.780">10.1017/jfm.2023.780</a>
  apa: Marensi, E., Yalniz, G., &#38; Hof, B. (2023). Dynamics and proliferation of
    turbulent stripes in plane-Poiseuille and plane-Couette flows. <i>Journal of Fluid
    Mechanics</i>. Cambridge University Press. <a href="https://doi.org/10.1017/jfm.2023.780">https://doi.org/10.1017/jfm.2023.780</a>
  chicago: Marensi, Elena, Gökhan Yalniz, and Björn Hof. “Dynamics and Proliferation
    of Turbulent Stripes in Plane-Poiseuille and Plane-Couette Flows.” <i>Journal
    of Fluid Mechanics</i>. Cambridge University Press, 2023. <a href="https://doi.org/10.1017/jfm.2023.780">https://doi.org/10.1017/jfm.2023.780</a>.
  ieee: E. Marensi, G. Yalniz, and B. Hof, “Dynamics and proliferation of turbulent
    stripes in plane-Poiseuille and plane-Couette flows,” <i>Journal of Fluid Mechanics</i>,
    vol. 974. Cambridge University Press, 2023.
  ista: Marensi E, Yalniz G, Hof B. 2023. Dynamics and proliferation of turbulent
    stripes in plane-Poiseuille and plane-Couette flows. Journal of Fluid Mechanics.
    974, A21.
  mla: Marensi, Elena, et al. “Dynamics and Proliferation of Turbulent Stripes in
    Plane-Poiseuille and Plane-Couette Flows.” <i>Journal of Fluid Mechanics</i>,
    vol. 974, A21, Cambridge University Press, 2023, doi:<a href="https://doi.org/10.1017/jfm.2023.780">10.1017/jfm.2023.780</a>.
  short: E. Marensi, G. Yalniz, B. Hof, Journal of Fluid Mechanics 974 (2023).
date_created: 2023-10-30T09:32:28Z
date_published: 2023-11-10T00:00:00Z
date_updated: 2024-02-15T09:06:23Z
day: '10'
ddc:
- '530'
department:
- _id: GradSch
- _id: BjHo
doi: 10.1017/jfm.2023.780
external_id:
  arxiv:
  - '2212.12406'
  isi:
  - '001088363700001'
file:
- access_level: open_access
  checksum: 17c64c1fb0d5f73252364bf98b0b9e1a
  content_type: application/pdf
  creator: dernst
  date_created: 2024-02-15T09:05:21Z
  date_updated: 2024-02-15T09:05:21Z
  file_id: '14996'
  file_name: 2023_JourFluidMechanics_Marensi.pdf
  file_size: 2804641
  relation: main_file
  success: 1
file_date_updated: 2024-02-15T09:05:21Z
has_accepted_license: '1'
intvolume: '       974'
isi: 1
keyword:
- turbulence
- transition to turbulence
- patterns
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
project:
- _id: 238598C6-32DE-11EA-91FC-C7463DDC885E
  grant_number: '662960'
  name: 'Revisiting the Turbulence Problem Using Statistical Mechanics: Experimental
    Studies on Transitional and Turbulent Flows'
publication: Journal of Fluid Mechanics
publication_identifier:
  eissn:
  - 1469-7645
  issn:
  - 0022-1120
publication_status: published
publisher: Cambridge University Press
quality_controlled: '1'
status: public
title: Dynamics and proliferation of turbulent stripes in plane-Poiseuille and plane-Couette
  flows
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 974
year: '2023'
...
---
_id: '5553'
abstract:
- lang: eng
  text: "Genotypic, phenotypic and demographic data for 2128 wild snapdragons and
    1127 open-pollinated progeny from a natural hybrid zone, collected as part of
    Tom Ellis' PhD thesis (submitted) February 2016).\r\n\r\nTissue samples were sent
    to LGC Genomics in Berlin for DNA extraction, and genotyping at 70 SNP markers
    by KASPR genotyping. 29 of these SNPs failed to amplify reliably, and have been
    removed from this dataset.\r\n\r\nOther data were retreived from an online database
    of this population at www.antspec.org."
article_processing_charge: No
author:
- first_name: David
  full_name: Field, David
  id: 419049E2-F248-11E8-B48F-1D18A9856A87
  last_name: Field
  orcid: 0000-0002-4014-8478
- first_name: Thomas
  full_name: Ellis, Thomas
  id: 3153D6D4-F248-11E8-B48F-1D18A9856A87
  last_name: Ellis
  orcid: 0000-0002-8511-0254
citation:
  ama: Field D, Ellis T. Inference of mating patterns among wild snapdragons in a
    natural hybrid zone in 2012. 2016. doi:<a href="https://doi.org/10.15479/AT:ISTA:37">10.15479/AT:ISTA:37</a>
  apa: Field, D., &#38; Ellis, T. (2016). Inference of mating patterns among wild
    snapdragons in a natural hybrid zone in 2012. Institute of Science and Technology
    Austria. <a href="https://doi.org/10.15479/AT:ISTA:37">https://doi.org/10.15479/AT:ISTA:37</a>
  chicago: Field, David, and Thomas Ellis. “Inference of Mating Patterns among Wild
    Snapdragons in a Natural Hybrid Zone in 2012.” Institute of Science and Technology
    Austria, 2016. <a href="https://doi.org/10.15479/AT:ISTA:37">https://doi.org/10.15479/AT:ISTA:37</a>.
  ieee: D. Field and T. Ellis, “Inference of mating patterns among wild snapdragons
    in a natural hybrid zone in 2012.” Institute of Science and Technology Austria,
    2016.
  ista: Field D, Ellis T. 2016. Inference of mating patterns among wild snapdragons
    in a natural hybrid zone in 2012, Institute of Science and Technology Austria,
    <a href="https://doi.org/10.15479/AT:ISTA:37">10.15479/AT:ISTA:37</a>.
  mla: Field, David, and Thomas Ellis. <i>Inference of Mating Patterns among Wild
    Snapdragons in a Natural Hybrid Zone in 2012</i>. Institute of Science and Technology
    Austria, 2016, doi:<a href="https://doi.org/10.15479/AT:ISTA:37">10.15479/AT:ISTA:37</a>.
  short: D. Field, T. Ellis, (2016).
contributor:
- contributor_type: project_manager
  first_name: Nicholas H
  id: 4880FE40-F248-11E8-B48F-1D18A9856A87
  last_name: Barton
  orcid: 0000-0002-8548-5240
datarep_id: '37'
date_created: 2018-12-12T12:31:30Z
date_published: 2016-02-19T00:00:00Z
date_updated: 2024-02-21T13:51:14Z
day: '19'
ddc:
- '576'
department:
- _id: NiBa
doi: 10.15479/AT:ISTA:37
file:
- access_level: open_access
  checksum: 4ae751b1fa4897fa216241f975a57313
  content_type: application/zip
  creator: system
  date_created: 2018-12-12T13:03:02Z
  date_updated: 2020-07-14T12:47:01Z
  file_id: '5620'
  file_name: IST-2016-37-v1+1_paternity_archive.zip
  file_size: 132808
  relation: main_file
file_date_updated: 2020-07-14T12:47:01Z
has_accepted_license: '1'
keyword:
- paternity assignment
- pedigree
- matting patterns
- assortative mating
- Antirrhinum majus
- frequency-dependent selection
- plant-pollinator interaction
license: https://creativecommons.org/publicdomain/zero/1.0/
month: '02'
oa: 1
oa_version: Published Version
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '1398'
    relation: research_paper
    status: public
status: public
title: Inference of mating patterns among wild snapdragons in a natural hybrid zone
  in 2012
tmp:
  image: /images/cc_0.png
  legal_code_url: https://creativecommons.org/publicdomain/zero/1.0/legalcode
  name: Creative Commons Public Domain Dedication (CC0 1.0)
  short: CC0 (1.0)
type: research_data
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2016'
...