Inverse Energy Cascade Structure of Turbulence in a Bubby Flow (Numerical Analysis Using Eulerian-Lagrangian Model Equations)

Material type: 文書・図像類

Author: MURAI, Yuichiほか

Publisher: 日本機械学会

Publication date: 2000-02

Material Format: Digital

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Note (General)：: The inverse energy cascade in bubbly flow is investigated by a numerical simulation using the Eulerian-Lagrangian model in which the governing equatio...

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Material Type: 文書・図像類
Title: Inverse Energy Cascade Structure of Turbulence in a Bubby Flow (Numerical Analysis Using Eulerian-Lagrangian Model Equations)
Author/Editor: MURAI, Yuichi
KITAGAWA, Atsuhide
SONG, Xiang-gun
OHTA, Junichi
YAMAMOTO, Fujio
Author Heading: MURAI, Yuichi
KITAGAWA, Atsuhide
SONG, Xiang-gun
OHTA, Junichi
YAMAMOTO, Fujio
Publication, Distribution, etc.: 日本機械学会
Publication Date: 2000-02
Publication Date (W3CDTF): 2000-02
Periodical title: The Japan Society of Mechanical Engineers, Series B
No. or year of volume/issue: 43 2
Volume: 43
Issue: 2
Pages: 197-205
ISSN (Periodical Title): ISSN : 1340-8054
Text Language Code: eng
Subject Heading: Multiphase Flow
Bubble
Turbulent Flow
Computational Fluid
Dynamics
Target Audience: 一般
Note (General): The inverse energy cascade in bubbly flow is investigated by a numerical simulation using the Eulerian-Lagrangian model in which the governing equations are formulated with emphasis on the translational motion of bubbles in nonuniform flow. In this paper we are concerned with the validation of the numerical model and various parametric dependencies on the inverse cascade. The calculated results reveal that,1)continuous growth of the spatial fluctuation scale in a bubble-induced flow is well predicted by the present numerical model and the results have a good analogy with the experimental results which were introduced in our first report,2) the strong relationship between energy-decaying process and bubble-bubble distance interval is also identified by the present analysis,and 3) the slope of energy-decaying in the high wavenumber region depends on the kinematic viscosity of liquid,and that in the low wavenumber region depends on inhomogeneous buoyancy distribution which changes due to the bubble motion.
Source: https://u-fukui.repo.nii.ac.jp/?action=repository_action_common_download&item_id=23113&item_no=1&attribute_id=22&file_no=1
https://u-fukui.repo.nii.ac.jp/?action=repository_action_common_download&item_id=23113&item_no=1&attribute_id=22&file_no=1
Access Restrictions: 限定公開
Rights (production): 〓 2000 日本機械学会
Data Provider (Database): 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
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ