An LES-wall model for turbulent backstep flow with wall transpiration and pressure gradient

Shih Chao Lee, Jing Tang Yang, Yei-Chin Chao

Research output: Contribution to journalArticle

Abstract

The separated flow field behind a backstep with lateral transpiration is computed by using large-eddy simulation (LES). A new wall law involving effects of transpiration rate and pressure gradient is proposed for incorporation into LES to treat complicated wall-bounded turbulent flows. Comparison of major characteristics for turbulent separated flow between calculations and available data is made for cases without and with mass transpiration at the bottom wall. For both cases, the global trend of time-averaged quantities provided through the present approach shows perceptible superiority over three other methods commonly used in the literature.

Original languageEnglish
Pages (from-to)577-588
Number of pages12
JournalJournal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers, Series C/Chung-Kuo Chi Hsueh Kung Ch'eng Hsuebo Pao
Volume23
Issue number6
Publication statusPublished - 2002 Dec

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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