COMPARISON BETWEEN RANS AND LES COMPUTATIONS ON PLUME DISPERSION AROUND AN ISOLATED CUBIC BUILDING

• TOMINAGA Yoshihide

  Prof., Dept. of Architecture and Building Engineering, Niigata Institute of Technology, Dr. Eng.

• KUROSAWA Koudai

  Graduate Student, Graduate School of Engineering, Niigata Institute of Technology

Bibliographic Information

Other Title

• 単体立方体モデル周辺の汚染質拡散を対象としたRANSとLESの比較
• 単体立方体モデル周辺の汚染質拡散を対象としたRANSとLESの比較 : CFDによる建物近傍の汚染質拡散の予測精度に関する研究　その2
• タンタイリッポウタイ モデル シュウヘン ノ オセンシツ カクサン オ タイショウ ト シタ RANS ト LES ノ ヒカク CFD ニ ヨル タテモノ キンボウ ノ オセンシツ カクサン ノ ヨソク セイド ニ カンスル ケンキュウ ソノ 2
• Study on prediction accuracy of CFD applied to dispersion around buildings Part 2
• CFDによる建物近傍の汚染質拡散の予測精度に関する研究　その２

Abstract

The purposes of this study are to confirm the accuracy of LES in modeling plume dispersion near and around a simple building model and to clarify the mechanism of the discrepancy in relation to the RANS computation. Simple LES modeling gives better results than RNG modeling of the distribution of concentration, although the difference for mean velocity is not so large. The horizontal diffusion of concentration is well reproduced by LES. This tendency is closely related to the reproduction of unsteady periodic fluctuation around the cube in LES.

Journal

• Journal of Environmental Engineering (Transactions of AIJ)

  Journal of Environmental Engineering (Transactions of AIJ) 74 (646), 1307-1313, 2009

  Architectural Institute of Japan

Keywords

• <i>CFD</i>
• <i>Plume dispersion</i>
• <i>RANS</i>
• <i>LES</i>
• <i>Cubic Model</i>

Details

• CRID: 1390001205201150720
• NII Article ID: 200000355802
• NII Article ID: 130004506167
• NII Book ID: AA11830377
• DOI: 10.3130/aije.74.1307
• ISSN: 1881817X
• ISSN: 13480685
• NDL BIB ID: 10515617
• Web Site: http://id.nii.ac.jp/1714/00000411/
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10515617
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed