Intermittent nature of acceleration in near wall turbulence

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

The behavior of acceleration near a solid wall was discussed using direct numerical simulation of a fully developed turbulent channel flow. It was found that acceleration near the wall was highly intermittent and the intermittency was in large part associated with the near wall organized coherent turbulent structure. The acceleration of large magnitude was mostly directed towards the rotation axis. Analysis shows that source of the intermittent acceleration was the rotational motion associated with the vortices that caused centripetal acceleration.

Original languageEnglish
Article number145901
Pages (from-to)144502-1-144502-4
JournalPhysical Review Letters
Volume92
Issue number14
DOIs
Publication statusPublished - 2004 Apr 9

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turbulence
intermittency
channel flow
direct numerical simulation
vortices

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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title = "Intermittent nature of acceleration in near wall turbulence",
abstract = "The behavior of acceleration near a solid wall was discussed using direct numerical simulation of a fully developed turbulent channel flow. It was found that acceleration near the wall was highly intermittent and the intermittency was in large part associated with the near wall organized coherent turbulent structure. The acceleration of large magnitude was mostly directed towards the rotation axis. Analysis shows that source of the intermittent acceleration was the rotational motion associated with the vortices that caused centripetal acceleration.",
author = "Changhoon Lee and Kyongmin Yeo and Choi, {Jung Il}",
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doi = "10.1103/PhysRevLett.92.144502",
language = "English",
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}

Intermittent nature of acceleration in near wall turbulence. / Lee, Changhoon; Yeo, Kyongmin; Choi, Jung Il.

In: Physical Review Letters, Vol. 92, No. 14, 145901, 09.04.2004, p. 144502-1-144502-4.

Research output: Contribution to journalArticle

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N2 - The behavior of acceleration near a solid wall was discussed using direct numerical simulation of a fully developed turbulent channel flow. It was found that acceleration near the wall was highly intermittent and the intermittency was in large part associated with the near wall organized coherent turbulent structure. The acceleration of large magnitude was mostly directed towards the rotation axis. Analysis shows that source of the intermittent acceleration was the rotational motion associated with the vortices that caused centripetal acceleration.

AB - The behavior of acceleration near a solid wall was discussed using direct numerical simulation of a fully developed turbulent channel flow. It was found that acceleration near the wall was highly intermittent and the intermittency was in large part associated with the near wall organized coherent turbulent structure. The acceleration of large magnitude was mostly directed towards the rotation axis. Analysis shows that source of the intermittent acceleration was the rotational motion associated with the vortices that caused centripetal acceleration.

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