BROWSE

Related Researcher

Author's Photo

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

ITEM VIEW & DOWNLOAD

Turbulent Statistics of the Turbulent Boundary Layer over a Cube-Roughened Wall

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Turbulent Statistics of the Turbulent Boundary Layer over a Cube-Roughened Wall
Other Titles
3 차원 입방형 표면조도가 난류경계층에 미치는 영향
Author
Lee, Jae HwaSung, Hyung Jin
Keywords
Direct Numerical Simulation; Turbulent Boundary Layer; Surface Roughness
Issue Date
2010-11
Publisher
대한기계학회
Citation
Transactions of the KSME, B, v.34, no.10, pp.917 - 923
Abstract
Direct numerical simulation (DNS) of a spatially developing turbulent boundary layer (TBL) with regularly arrayed cubical roughness elements was performed to investigate the effects of three-dimensional (3D) surface elements. The staggered cubes downstream were periodically arranged in the streamwise and spanwise directions with pitches of px/k=8 and pz/k=2, where px and pz are the streamwise and spanwise spacings of the cubes; the roughness height (k) was k=1.5θin, where θin is the momentum thickness at the inlet. Spatially developing characteristics over the 3D cubical roughness were compared with the data obtained from the DNS over the two-dimensional (2D) rod roughened wall and smooth wall. Introduction of the cubical roughness on the TBL affected the turbulent Reynolds stresses not only in the roughness sublayer but also in the outer layer; and these effects are consistent with those observed over the 2D rough wall
URI
Go to Link
DOI
10.3795/KSME-B.2010.34.10.917
ISSN
1226-4881
Appears in Collections:
MEN_Journal Papers
Files in This Item:
KCI_FI001483820.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU