Inverse Energy Cascade Structure of Turbulence in a Bubby Flow (PIV Measurement and Results)

• 資料種別: 文書・図像類
• タイトル: Inverse Energy Cascade Structure of Turbulence in a Bubby Flow (PIV Measurement and Results)
• 著者・編者: MURAI, Yuichi; SONG, Xiang-qun; TAKAGI, Takashi; ISHIKAWA, Masa-aki; YAMAMOTO, Fujio; OHTA, Junichi
• 著者標目: MURAI, Yuichi; SONG, Xiang-qun; TAKAGI, Takashi; ISHIKAWA, Masa-aki; YAMAMOTO, Fujio; OHTA, Junichi
• 出版事項: 日本機械学会
• 出版年月日等: 2000-02
• 出版年（W3CDTF）: 2000-02
• タイトル（掲載誌）: The Japan Society of Mechanical Engineers, Series B
• 巻号年月日等（掲載誌）: 43 2
• 掲載巻: 43
• 掲載号: 2
• 掲載ページ: 188-196
• ISSN（掲載誌）: ISSN : 1340-8054
• 本文の言語コード: eng
• 件名標目: Multiphase Flow; Bubble; Turbulent Flow; Energy Cascade; Particle Imaging Velocimetry
• 対象利用者: 一般
• 一般注記: The inverse energy cascade,which is one of the important phenomena to enhance the large-scale flow instability in bubbly flow,is investigated by measuring a local two-phase flow structure driven by buoyant bubbles using particle imaging velocimetry (PIV). In PIV,the flow field of liquid phase is measured by separating an original image to respective phase images using a statistical thresholding method for separating image parameters of bubbles and particles. The present results obtained in the case where the bubble Reynolds number and average void fraction are less than 30 and 1.5%,respectively,confirm the large energy decay with a slope index steeper than-5/3 in the log-log diagram of energy spectrum in a high wavenumber region. An important relationship between the energy spectrum and the bubble-bubble interval distance is also detected.
• 一次資料へのリンクURL: https://u-fukui.repo.nii.ac.jp/?action=repository_action_common_download&item_id=23112&item_no=1&attribute_id=22&file_no=1
• オンライン閲覧公開範囲: 限定公開
• 著作権情報: 〓 2000 日本機械学会
• 連携機関・データベース: 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）; https://irdb.nii.ac.jp
• 提供元機関・データベース: 福井大学 : 福井大学学術機関リポジトリ