Performance of a hybrid LES/RANS model combined with a wall function for predicting quite high Reynolds-number turbulent channel flows up to

• ABE Ken-ichi

  Department of Aeronautics and Astronautics, Kyushu University

書誌事項

タイトル別名

• Performance of a hybrid LES/RANS model combined with a wall function for predicting quite high Reynolds-number turbulent channel flows up to <i>Re</i>_τ=6×10⁷

抄録

Performance of an anisotropy-resolving hybrid LES/RANS (HLR) model was investigated. An important feature of this HLR model is the introduction of an extra anisotropic term in a sub-grid scale (SGS) model for large eddy simulation (LES) to represent the SGS stress anisotropy more correctly. Although the basic performance of this model was validated in some previous studies, it is still unclear how the model works for very high Reynolds-number (Re) turbulent flows, in which no-slip wall conditions are no more applicable. Thus, to investigate the predictive performance of this HLR model, it was applied to very high Re turbulent channel flows up to Re_τ = 6 × 10⁷, together with a conventional wall function as the wall-boundary condition. The computational results obtained by the present anisotropic HLR model were carefully compared with those by an isotropic HLR model.

収録刊行物

• Journal of Thermal Science and Technology

  Journal of Thermal Science and Technology 15 (2), JTST0014-JTST0014, 2020

  一般社団法人日本機械学会・社団法人日本伝熱学会

キーワード

• Turbulence
• Anisotropy-resolving SGS model
• Hybrid LES/RANS model
• High Reynolds number
• Wall function

詳細情報

• CRID: 1390848250133763712
• NII論文ID: 130007883974
• DOI: 10.1299/jtst.2020jtst0014
• ISSN: 18805566
• HANDLE: 2324/4151116
• Web Site: https://www.jstage.jst.go.jp/article/jtst/15/2/15_2020jtst0014/_pdf
• 本文言語コード: en
• データソース種別:
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  • IRDB
  • Crossref
  • CiNii Articles
  • KAKEN
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