Examination of the Initial Field Dependence of the Decay Exponent Value of Decaying Turbulence using a Large-Eddy Simulation and a Wind Tunnel Experiment

• 資料種別: 記事
• タイトル: Examination of the Initial Field Dependence of the Decay Exponent Value of Decaying Turbulence using a Large-Eddy Simulation and a Wind Tunnel Experiment
• 著者・編者: Naru ITAMURA; Hiroki SUZUKI; Shinsuke MOCHIZUKI
• 著者標目: Naru ITAMURA; Hiroki SUZUKI; Shinsuke MOCHIZUKI
• タイトル（掲載誌）: Advanced experimental mechanics / Editorial board for advanced experimental mechanics [編]
• 巻号年月日等（掲載誌）: 8:2023.8
• 掲載巻: 8
• 掲載ページ: 17-24
• 掲載年月日（W3CDTF）: 2023-08
• ISSN（掲載誌）: 2189-4752
• ISSN-L（掲載誌）: 2189-4752
• 出版事項（掲載誌）: Niigata : The Japanese Society for Experimental Mechanics
• 出版地（国名コード）: JP
• 本文の言語コード: eng
• NDLC: ZM17
• 対象利用者: 一般
• 所蔵機関: 国立国会図書館
• 請求記号: Z63-D560
• 連携機関・データベース: 国立国会図書館 : 国立国会図書館雑誌記事索引; https://ndlsearch.ndl.go.jp
• 書誌ID（NDLBibID）: 033102126; http://id.ndl.go.jp/bib/033102126
• 整理区分コード: 632

• 要約等: <p>This study aims to clarify the robustness of a value of a decay exponent. This parameter characterizes the decay characteristics of grid-generated turbulence obtained using a wind tunnel experiment and a numerical simulation. Here, largeeddy simulation is used as the numerical analysis in this study. Decay characteristics of the isotopically decaying turbulence are compared with those of the grid turbulence reproduced in the wind tunnel experiment. Main results of this study are that the values of the decay exponent for grid turbulence are obtained after compensating for the negligible wind tunnel blockage effect, that homogeneous isotropic turbulence is reproduced using large-eddy simulation with a value of the decay exponent that is close to the experimentally measured value of the decay exponent, and that the effects of anisotropy and Reynolds stress obtained in this study using LES are not significant.</p>
• DOI: 10.11395/aem.8.0_17
• オンライン閲覧公開範囲: インターネット公開
• 連携機関・データベース: 科学技術振興機構 : J-STAGE; http://www.jstage.jst.go.jp

• 要約等: <p>This study aims to clarify the robustness of a value of a decay exponent. This parameter characterizes the decay characteristics of grid-generated turbulence obtained using a wind tunnel experiment and a numerical simulation. Here, largeeddy simulation is used as the numerical analysis in this study. Decay characteristics of the isotopically decaying turbulence are compared with those of the grid turbulence reproduced in the wind tunnel experiment. Main results of this study are that the values of the decay exponent for grid turbulence are obtained after compensating for the negligible wind tunnel blockage effect, that homogeneous isotropic turbulence is reproduced using large-eddy simulation with a value of the decay exponent that is close to the experimentally measured value of the decay exponent, and that the effects of anisotropy and Reynolds stress obtained in this study using LES are not significant.</p>
• DOI: 10.11395/aem.8.0_17; https://doi.org/10.11395/aem.8.0_17
• オンライン閲覧公開範囲: インターネット公開
• 関連情報（URI）: http://id.ndl.go.jp/bib/033102126; https://ndlsearch.ndl.go.jp/books/R000000004-I033102126
• 連携機関・データベース: 国立情報学研究所 : CiNii Research; https://cir.nii.ac.jp/
• 提供元機関・データベース: Japan Link Center; https://japanlinkcenter.org/top; 雑誌記事索引データベース; https://ndlsearch.ndl.go.jp; 科学研究費助成事業データベース; https://kaken.nii.ac.jp/ja
• 書誌ID（NDLBibID）: 033102126; http://id.ndl.go.jp/bib/033102126