---
_id: '1087'
abstract:
- lang: eng
  text: Using extensive direct numerical simulations, the dynamics of laminar-turbulent
    fronts in pipe flow is investigated for Reynolds numbers between and 5500. We
    here investigate the physical distinction between the fronts of weak and strong
    slugs both by analysing the turbulent kinetic energy budget and by comparing the
    downstream front motion to the advection speed of bulk turbulent structures. Our
    study shows that weak downstream fronts travel slower than turbulent structures
    in the bulk and correspond to decaying turbulence at the front. At the downstream
    front speed becomes faster than the advection speed, marking the onset of strong
    fronts. In contrast to weak fronts, turbulent eddies are generated at strong fronts
    by feeding on the downstream laminar flow. Our study also suggests that temporal
    fluctuations of production and dissipation at the downstream laminar-turbulent
    front drive the dynamical switches between the two types of front observed up
    to.
acknowledged_ssus:
- _id: ScienComp
article_processing_charge: No
arxiv: 1
author:
- first_name: Baofang
  full_name: Song, Baofang
  last_name: Song
- first_name: Dwight
  full_name: Barkley, Dwight
  last_name: Barkley
- first_name: Björn
  full_name: Hof, Björn
  id: 3A374330-F248-11E8-B48F-1D18A9856A87
  last_name: Hof
  orcid: 0000-0003-2057-2754
- first_name: Marc
  full_name: Avila, Marc
  last_name: Avila
citation:
  ama: Song B, Barkley D, Hof B, Avila M. Speed and structure of turbulent fronts
    in pipe flow. <i>Journal of Fluid Mechanics</i>. 2017;813:1045-1059. doi:<a href="https://doi.org/10.1017/jfm.2017.14">10.1017/jfm.2017.14</a>
  apa: Song, B., Barkley, D., Hof, B., &#38; Avila, M. (2017). Speed and structure
    of turbulent fronts in pipe flow. <i>Journal of Fluid Mechanics</i>. Cambridge
    University Press. <a href="https://doi.org/10.1017/jfm.2017.14">https://doi.org/10.1017/jfm.2017.14</a>
  chicago: Song, Baofang, Dwight Barkley, Björn Hof, and Marc Avila. “Speed and Structure
    of Turbulent Fronts in Pipe Flow.” <i>Journal of Fluid Mechanics</i>. Cambridge
    University Press, 2017. <a href="https://doi.org/10.1017/jfm.2017.14">https://doi.org/10.1017/jfm.2017.14</a>.
  ieee: B. Song, D. Barkley, B. Hof, and M. Avila, “Speed and structure of turbulent
    fronts in pipe flow,” <i>Journal of Fluid Mechanics</i>, vol. 813. Cambridge University
    Press, pp. 1045–1059, 2017.
  ista: Song B, Barkley D, Hof B, Avila M. 2017. Speed and structure of turbulent
    fronts in pipe flow. Journal of Fluid Mechanics. 813, 1045–1059.
  mla: Song, Baofang, et al. “Speed and Structure of Turbulent Fronts in Pipe Flow.”
    <i>Journal of Fluid Mechanics</i>, vol. 813, Cambridge University Press, 2017,
    pp. 1045–59, doi:<a href="https://doi.org/10.1017/jfm.2017.14">10.1017/jfm.2017.14</a>.
  short: B. Song, D. Barkley, B. Hof, M. Avila, Journal of Fluid Mechanics 813 (2017)
    1045–1059.
date_created: 2018-12-11T11:50:04Z
date_published: 2017-02-25T00:00:00Z
date_updated: 2025-06-04T08:35:11Z
day: '25'
department:
- _id: BjHo
doi: 10.1017/jfm.2017.14
ec_funded: 1
external_id:
  arxiv:
  - '1603.04077'
  isi:
  - '000394376400044'
intvolume: '       813'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1603.04077
month: '02'
oa: 1
oa_version: Submitted Version
page: 1045 - 1059
project:
- _id: 25152F3A-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '306589'
  name: Decoding the complexity of turbulence at its origin
publication: Journal of Fluid Mechanics
publication_identifier:
  issn:
  - 0022-1120
publication_status: published
publisher: Cambridge University Press
publist_id: '6290'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Speed and structure of turbulent fronts in pipe flow
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 813
year: '2017'
...