APPLICATION OF LES TO THE HIGH WIND TURBULENCE AROUND A STEEP HILL WITH SURFACE ROUGHNESS

• ONO Yoshiyuki

  Obayashi Corp.

• TAMURA Tetsuro

  Tokyo Institute of Technology

Bibliographic Information

Other Title

• 粗面を有する三次元丘陵地まわりの強風乱流へのLESの適用
• ソメン オ ユウスル 3ジゲン キュウリョウチマワリ ノ キョウフウ ランリュウ エ ノ LES ノ テキヨウ

Abstract

The purpose of this paper is to investigate the effect of the roughness of the ground surface on the flow around a 3D steep hill in boundary-layer turbulence by LES analysis. First, we confirm that the present LES method with very small numerical dissipation can simulate the flow around a 3D steep hill with smooth surface of the ground in boundary-layer turbulence. Next, we introduce roughness blocks which are modeled by Goldstein's immersed boundary method, and then validate the present LES method about the roughness effects on the flow characteristics around a 3D steep hill through the comparison of the computational results with the experimental data. Finally the effects of the roughness of the ground surface on the wake structure of the 3D steep hill are discussed by use of the computational flow visualization technique.

Journal

• Journal of Structural and Construction Engineering (Transactions of AIJ)

  Journal of Structural and Construction Engineering (Transactions of AIJ) 71 (606), 73-80, 2006

  Architectural Institute of Japan

Keywords

• LES
• roughness effect
• a steep hill
• wake structure
• boundary-layer turbulence

Details

• CRID: 1390001205637732480
• NII Article ID: 110004763711
• NII Book ID: AN10438559
• DOI: 10.3130/aijs.71.73_2
• ISSN: 18818153
• ISSN: 13404202
• NDL BIB ID: 8057006
• Web Site: http://id.ndl.go.jp/bib/8057006
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8057006
• Web Site: https://www.jstage.jst.go.jp/article/aijs/71/606/71_KJ00004341837/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed