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Lee, Jae Hwa
Flow Physics and Control Lab
Research Interests
  • Turbulent Flow Physics and Control
  • Incompressible and Compressible Flows
  • Fluid-Structure Interaction
  • Multi-Phase Flow with Heat Transfer


Statistics of the turbulent boundary layers over 3D cube-roughened walls

DC Field Value Language Ahn, Junsun ko Lee, Jae Hwa ko Sung, Hyung Jin ko 2014-12-31T05:49:07Z - 2014-12-31 ko 2013-12 -
dc.identifier.citation INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, v.44, no., pp.394 - 402 ko
dc.identifier.issn 0142-727X ko
dc.identifier.uri -
dc.identifier.uri ko
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). ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher ELSEVIER SCIENCE INC ko
dc.subject Boundary layer structure ko
dc.subject Direct numerical simulation ko
dc.subject Surface roughness ko
dc.subject Turbulent boundary layers ko
dc.title Statistics of the turbulent boundary layers over 3D cube-roughened walls ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84888435727 ko
dc.identifier.wosid 000329594600035 ko
dc.type.rims ART ko
dc.description.wostc 0 * 2015-05-06 *
dc.identifier.doi 10.1016/j.ijheatfluidflow.2013.07.010 ko
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