Intermittent nature of acceleration in near wall turbulence

Changhoon Lee; Kyongmin Yeo; Jung Il Choi

doi:10.1103/PhysRevLett.92.144502

Intermittent nature of acceleration in near wall turbulence

Changhoon Lee, Kyongmin Yeo, Jung Il Choi

Research output: Contribution to journal › Article › peer-review

49 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 language	English
Article number	144502
Pages (from-to)	144502-1-144502-4
Journal	Physical review letters
Volume	92
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevLett.92.144502
Publication status	Published - 2004 Apr 9

Bibliographical note

Funding Information:
This research was supported by the Korea Science and Engineering Foundation through Grant No. R01-2003-000-10142-0. We thank J. Kim and A. M. Reynolds for helpful discussions.

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.92.144502

Cite this

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author = "Changhoon Lee and Kyongmin Yeo and Choi, {Jung Il}",

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AU - Yeo, Kyongmin

AU - Choi, Jung Il

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PY - 2004/4/9

Y1 - 2004/4/9

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.

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Intermittent nature of acceleration in near wall turbulence

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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