LES on turbulence structures and gaseous dispersion behavior in convective boundary layer with the capping inversion

• ABE Satoshi

  Tokyo Institute of Technology

• TAMURA Tetsuro

  Tokyo Institute of Technology

• NAKAYAMA Hiromasa

  Japan Atomic Energy Agency

Bibliographic Information

Other Title

• 逆転層を有する対流境界層中の乱流構造と拡散挙動に関するLES解析
• ギャクテンソウ オ ユウスル タイリュウ キョウカイソウチュウ ノ ランリュウ コウゾウ ト カクサン キョドウ ニ カンスル LES カイセキ

Abstract

This paper performs Large-eddy simulation (LES) of gaseous dispersion in the atmospheric convective boundary layer (CBL) which is capped by a temperature inversion. The vertical temperature flux profile becomes negative within the capping inversion, and its negative peak value is indicated due to the entrainment of a plume and its resulting fluctuation behavior. Turbulence structures based on the entrainment are determined by the strength of capping inversion. Furthermore, gaseous dispersion behavior is sensitively influenced by temperature profile. Our objective is to compare LES results with wind tunnel and observation data for numerical validation, also to investigate characteristics of turbulence structures and gaseous dispersion in CBL with the capping inversion.

Journal

• Journal of Wind Engineering

  Journal of Wind Engineering 33 (4), 131-148, 2008

  Japan Association for Wind Engineering

Keywords

• <I>Large-eddy simulation</I>
• <I>Convective boundary layer</I>
• <I>Inversion layer</I>
• <I>Turbulence structures</I>
• <I>Dispersion</I>

Details

• CRID: 1390001205229633664
• NII Article ID: 10024683759
• NII Book ID: AN10072785
• ISSN: 09121935
• ISSN: 1349340X
• ISSN: 13493507
• DOI: 10.5359/jwe.33.131
• NDL BIB ID: 9714866
• Web Site: http://id.ndl.go.jp/bib/9714866
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9714866
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed