Numerical prediction of separating and reattaching flows with a modified low-Reynolds-number k-ϵ model

K. Abe, Y. Nagano, T. Kondoh

研究成果: Contribution to journalArticle査読

6 被引用数 (Scopus)

抄録

We propose a new turbulence model which is modified from the low-Reynolds-number k-ε{lunate} model developed by Nagano and Tagawa. The main improvement is made by the introduction of the Kolmogorov velocity scale uε{lunate} ≡ (νε{lunate}) 1 4 instead of the friction velocity uτ. We have also reevaluated the model constants in the transport equations. With these modifications, it is shown that the present model predicts quite successfully the separating and reattaching turbulent flows downstream of a backward-facing step at various Reynolds numbers, which have been very difficult to simulate with any previous k-ε{lunate} model.

本文言語英語
ページ(範囲)85-94
ページ数10
ジャーナルJournal of Wind Engineering and Industrial Aerodynamics
46-47
C
DOI
出版ステータス出版済み - 8 1993
外部発表はい

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Renewable Energy, Sustainability and the Environment
  • Mechanical Engineering

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