DC Field | Value | Language |
---|---|---|
dc.contributor.author | 이재화 | - |
dc.contributor.author | 성형진 | - |
dc.date.accessioned | 2013-03-29T07:35:18Z | - |
dc.date.available | 2013-03-29T07:35:18Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2011-05-26 | - |
dc.identifier.citation | 한국전산유체공학회 2011년도 춘계학술대회, v., no., pp.379 - 381 | - |
dc.identifier.uri | http://hdl.handle.net/10203/169075 | - |
dc.description.abstract | Direct numerical simulations (DNSs) of spatially developing turbulent boundary layers (TBLs) over two-dimensional (2-D) and rod and three-dimensional (3-D) cube rough walls were performed to investigate the effects of streamwise spacing on the properties of the TBL The 2-D and 3-D roughness were periodically arranged in the downstream direction with pitches of px/k=2, 3, 4, 6, 8 and 10 and for the cube, the spanwise spacing is fixed to pz/k=2 with staggered array, where px and pz are the streamwise and spanwise spacings of the roughness and k is the roughness height. Inspection of the Reynolds stresses showed that except for px/k=2 and 3 over the 2-D rough walls, the effects of the surface roughness extend to the outer layer over the 2-D and 3-D rough walls and the magnitude of the Reynolds shear stress in the outer layer is increased with proportion to px/k. However, such results are contrary to the trends of form drag, roughness junction and roughness length against px/k, which showed the maximum values at px/k=8 and 4 over the 2-D and 3-D rough walls respectively. | - |
dc.language | KOR | - |
dc.publisher | 한국전산유체공학회 | - |
dc.title | 표면조도가 있는 난류경계층의 직접수치모사 | - |
dc.title.alternative | Direct Numerical Simulations of the Turbulent Boundary Layers over the Rough Walls | - |
dc.type | Conference | - |
dc.type.rims | CONF | - |
dc.citation.beginningpage | 379 | - |
dc.citation.endingpage | 381 | - |
dc.citation.publicationname | 한국전산유체공학회 2011년도 춘계학술대회 | - |
dc.identifier.conferencecountry | South Korea | - |
dc.identifier.conferencecountry | South Korea | - |
dc.contributor.localauthor | 성형진 | - |
dc.contributor.nonIdAuthor | 이재화 | - |
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