A numerical study of a thermally stratified boundary layer under various stable conditions

Y. Ohya, H. Hashimoto, S. Ozono

研究成果: Contribution to journalArticle査読

4 被引用数 (Scopus)

抄録

A direct numerical simulation of a stratified boundary layer under various stable conditions is made by a finite-difference method without any turbulence model. The numerical simulation is very successful, showing variations of turbulent quantities due to thermal stratification. Namely, the intensities and fluxes of velocity and temperature fluctuations are significantly suppressed with increasing stability similar to the experimental results. Flow visualization of computational results is very useful to understand changes in the flow structure under stable stratification. However, compared with experimental results, the discrepancies in turbulence structure in the lowest part of the boundary layer (especially for z/δ < 0.2, δ is the boundary layer thickness) are observed.

本文言語英語
ページ(範囲)793-804
ページ数12
ジャーナルJournal of Wind Engineering and Industrial Aerodynamics
67-68
DOI
出版ステータス出版済み - 1997

All Science Journal Classification (ASJC) codes

  • 土木構造工学
  • 再生可能エネルギー、持続可能性、環境
  • 機械工学

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