A study of evaluation method of the concentration variance at the subgrid-scale in large-eddy simulation: Development of prediction system for micro-scale atmospheric pollution Part 4

Hideki Kikumoto, Ryozo Ooka, Takeo Takahashi, Jongyeon Lim, Kazuhide Ito

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

We conducted an experiment and large-eddy simulation (LES) of the dispersion of an inert gas in a test chamber which modeled the urban street canyon. In LES, the subgrid-scale variance (SGSV) of the pollutant concentration is omitted by the filtering operation. To evaluate it, we introduced a transport equation of SGSV and solved it with other governing equations. Concentration fluctuations which accounted SGSV showed good agreement with results in the experiment except the near-source region. A budget analysis of the transport equation found the local non-equilibriums of SGSV and difficulty of the zero-equation formulation of SGSV in the canyon.

本文言語英語
ページ(範囲)579-588
ページ数10
ジャーナルJournal of Environmental Engineering (Japan)
78
689
DOI
出版ステータス出版済み - 7 2013

All Science Journal Classification (ASJC) codes

  • Environmental Engineering

フィンガープリント 「A study of evaluation method of the concentration variance at the subgrid-scale in large-eddy simulation: Development of prediction system for micro-scale atmospheric pollution Part 4」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル