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http://dx.doi.org/10.3795/KSME-B.2005.29.6.687

Tensorial Time Scales for Turbulent Gradient Transport of Reynolds Stresses  

Cho Choong Won (한국과학기술원 기계공학과)
Kim Kyoungyoun (한국과학기술원 기계공학과)
Sung Hyung Jin (한국과학기술원 기계공학과)
Chung Myung Kyoon (한국과학기술원 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.29, no.6, 2005 , pp. 687-695 More about this Journal
Abstract
On the notion that the Reynolds stresses are transported with different time scale depending on the transport direction, the third order velocity correlations are represented by a new turbulent gradient transport model with tonsorial Lagrangian time scale. In order to verify the proposed model, DNS data are first obtained in a turbulent channel flow at Re = 180 and tonsorial Lagrangian time scales are computed. The present model predictions are compared with DNS data and those predicted by the third-order turbulent transport model of Hanjalic and Launder that uses a scalar time scale. The result demonstrates that the Reynolds stresses are indeed transported with different time scale depending on the transport direction.
Keywords
Particle Tracking; Turbulent Channel Flow; DNS; Lagrangian Integral Time Scale; Turbulent Transport; Triple-Velocity Correlation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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