dc.citation.endPage |
402 |
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dc.citation.startPage |
394 |
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dc.citation.title |
INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW |
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dc.citation.volume |
44 |
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dc.contributor.author |
Ahn, Junsun |
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dc.contributor.author |
Lee, Jae Hwa |
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dc.contributor.author |
Sung, Hyung Jin |
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dc.date.accessioned |
2023-12-22T03:10:43Z |
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dc.date.available |
2023-12-22T03:10:43Z |
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dc.date.created |
2014-12-31 |
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dc.date.issued |
2013-12 |
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dc.description.abstract |
Direct numerical simulations (DNSs) of turbulent boundary layers (TBLs) over three-dimensional (3D) cube-roughened walls were performed and the turbulent characteristics in the inner and outer layers were statistically analyzed. The spanwise spacing was varied over pz/. k= 2, 3, 4, and 6 (pz is the spanwise spacing between cubes and k is the height of the roughness) to examine the effects of the roughness spacing on the TBLs. The form drag (Cp) reached a maximum at pz/. k= 3, whereas the skin-friction drag (Cf) reached a minimum at the same extent. The Reynolds stresses in the outer region were shown to increase with increasing pz/. k, and similar behavior was observed in the wall-normal velocity fluctuations at the roughness crest (vw+). The properties of the turbulence in the inner and outer layers were found to be well represented by the roughness density (λp). |
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dc.identifier.bibliographicCitation |
INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, v.44, pp.394 - 402 |
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dc.identifier.doi |
10.1016/j.ijheatfluidflow.2013.07.010 |
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dc.identifier.issn |
0142-727X |
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dc.identifier.scopusid |
2-s2.0-84888435727 |
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dc.identifier.uri |
https://scholarworks.unist.ac.kr/handle/201301/9710 |
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dc.identifier.url |
https://www.sciencedirect.com/science/article/pii/S0142727X13001525?via%3Dihub |
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dc.identifier.wosid |
000329594600035 |
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dc.language |
영어 |
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dc.publisher |
ELSEVIER SCIENCE INC |
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dc.title |
Statistics of the turbulent boundary layers over 3D cube-roughened walls |
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dc.type |
Article |
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dc.description.journalRegisteredClass |
scie |
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dc.description.journalRegisteredClass |
scopus |
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