Direct Numerical Simulation By LBM and Analyses of Two-dimensional Isotropic Turbulence

Material type: 文書・図像類

Author: Ao-kui, Xiong

Publisher: 航空宇宙技術研究所

Publication date: 2003-06

Material Format: Digital

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Note (General)：: Direct numerical simulations of the forced two-dimensional turbulence are performed by lattice Boltzmann method with high resolutions. It is confirmed...

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Material Type: 文書・図像類
Title: Direct Numerical Simulation By LBM and Analyses of Two-dimensional Isotropic Turbulence
Author/Editor: Ao-kui, Xiong
Author Heading: Ao-kui, Xiong
Publication, Distribution, etc.: 航空宇宙技術研究所
Publication Date: 2003-06
Publication Date (W3CDTF): 2003-06
Periodical title: 独立行政法人航空宇宙技術研究所特別資料 = Special Publication of National Aerospace Laboratory SP-59
No. or year of volume/issue: 59
Volume: 59
Pages: 4-
ISSN (Periodical Title): ISSN : 1347-457X
Text Language Code: eng
Subject Heading: Direct numerical simulation, Lattice Boltzmann method, Two-dimensional turbulence
Target Audience: 一般
Note (General): Direct numerical simulations of the forced two-dimensional turbulence are performed by lattice Boltzmann method with high resolutions. It is confirmed that the lattice Boltzmann method is an alternative approach to simulate multi-scales flows efficiently before instability takes place. The instability can occur even after millions time-steps of iteration. Based on the database of the DNS, the behaviors of energy and enstrophy flux and the features of SGS Lamb vector in context of large eddy simulation are discussed. The most important observation is that the transverse component of the SGS Lamb vector, which plays a key role in the dynamics, only dominates in the regions of curved sheet-like structures.
資料番号: NALSP0059005
レポート番号: NAL SP-59
Source: https://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=43577&item_no=1&attribute_id=31&file_no=1
https://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=43577&item_no=1&attribute_id=31&file_no=1
Access Restrictions: 限定公開
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): 宇宙航空研究開発機構 : 宇宙航空研究開発機構リポジトリ