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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


표면 형상 변화에 따른 난류경계층 유동장 분석

DC Field Value Language Lee, Jae Hwa ko 2015-06-29T06:46:50Z - 2015-06-20 ko 2014-12 ko
dc.identifier.citation 한국가시화정보학회지, v.3, no.12, pp.15 - 20 ko
dc.identifier.issn 1598-8430 ko
dc.identifier.uri -
dc.description.abstract Direct numerical simulation (DNS) dataset of a turbulent boundary layer (TBL) with a step change from smooth to rough surface is analyzed to examine spatially developing flow characteristics. The roughness elements are periodically arranged two-dimensional (2-D) spanwise rods with a streamwise pitch of λ = 8k (= 12θin), and the roughness height is k = 1.5θin, where θin is the inlet momentum thickness. The step change is introduced 80θin downstream from the inlet. For the first time, full images from the DNS data with the step change from the smooth to rough walls is present to get some idea of the geometry of turbulent coherent structures over rough wall, especially focusing on their existence and partial dynamics over the rough wall. The results show predominance of hairpin vortices over the rough wall and their spanwise scale growth mechanism by merging. ko
dc.description.statementofresponsibility close -
dc.language 한국어 ko
dc.publisher 한국가시화정보학회 ko
dc.title 표면 형상 변화에 따른 난류경계층 유동장 분석 ko
dc.title.alternative Transition of Turbulent Boundary Layer with a Step Change from Smooth to Rough Surface ko
dc.type ARTICLE ko
dc.type.rims ART ko
dc.identifier.url ko
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