dc.citation.conferencePlace |
AT |
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dc.citation.conferencePlace |
University of Melbourne, Melbourne Law School Melbourne |
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dc.citation.title |
9th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2015 |
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dc.contributor.author |
Lee, Jae Hwa |
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dc.contributor.author |
Ahn, J |
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dc.contributor.author |
Lee, J |
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dc.contributor.author |
Sung, HJ |
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dc.date.accessioned |
2023-12-19T22:09:30Z |
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dc.date.available |
2023-12-19T22:09:30Z |
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dc.date.created |
2015-07-08 |
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dc.date.issued |
2015-07-02 |
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dc.description.abstract |
A direct numerical simulation of turbulent pipe flow is performed at Ret = 3008 with a long streamwise domain length (30R) to investigate wall scaling laws in the physical and wavenumber spaces. The power law follows the streamwise mean velocity in the overlap region, y+ = 90-300, evaluated by the power law indicator function. The scale-separated Reynolds shear stress shows that the largescale motions (Λx + > 3000) are more responsible to construct the constant-stress layer than the small-scale motions (Λx + > 3000), and thus it is proposed that the large-scale motions more contribute to the growth of the mean velocity in the overlap region than the small-scale motions. In the premultiplied energy spectra of the streamwise velocity fluctuations, the κx -1 region ssociates with the attached eddies appeared in Λx;/R = 2-5 at y+ =90-300 with the bimodal distribution. Linear growth of small-scale energies to large-scale energies helps to appear the κx -1 region at high Reynolds number. |
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dc.identifier.bibliographicCitation |
9th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2015 |
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dc.identifier.scopusid |
2-s2.0-85034438008 |
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dc.identifier.uri |
https://scholarworks.unist.ac.kr/handle/201301/35516 |
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dc.language |
영어 |
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dc.publisher |
9th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2015 |
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dc.title |
Wall scaling laws for a high-Reynolds-number turbulent pipe flow at Re=3008 |
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dc.type |
Conference Paper |
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dc.date.conferenceDate |
2015-06-30 |
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