Study of universality in turbulent flows at high Reynolds number from the view point of computational science

从计算科学的角度研究高雷诺数湍流的普遍性

• 批准号: 20340099
• 负责人: KANEDA Yukio
• 金额: $ 10.98万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20340099/
• 关键词: 乱流; 高いレイノルズ数; 直接数値シミュレーション; データ解析; 統計的普遍性; 壁乱流; ウェーブレット解析; 秩序渦シミュレーション; 平行2平板間乱流; Wavelet; Coherent Vortex Simulation

The universality in the statistics of turbulent flows at high Reynolds number as well as the idea of the universality were examined on the basis of the analysis of the numerical data by large-scale direct numerical simulation. Particular attention was paid to (A) the universality inherent in the turbulence dynamics and (B) the universality of wall bounded turbulence. Study was also made on the method of coherent vortex simulation, which is based on the extraction of coherent vortices by the use of wavelet analysis and is expected to be useful for reducing the degrees of freedom to be treated in turbulence modeling.

在对大尺度直接数值模拟数据分析的基础上，探讨了高雷诺数湍流统计的普适性和普适性思想。特别注意的是(A)湍流动力学固有的普遍性和(B)壁有界湍流的普遍性。本文还对相干涡模拟方法进行了研究，该方法基于小波分析提取相干涡，可用于降低湍流建模中要处理的自由度。

项目成果

Frontiers of Computational Science 2008

计算科学前沿 2008

• 发表时间: 2008
• 作者: Y. Kaneda;M. Sasai;K. Tachibana (Eds. )
• 通讯作者: K. Tachibana (Eds. )

Wavelet-based coherent vorticity sheet and current sheet extraction from three-dimensional homogeneous magnetohydrodynamic turbulence

基于小波的三维均匀磁流体动力湍流中的相干涡度片和电流片提取

• 发表时间: 2009
• 期刊: Physics of Plasmas 16
• 作者: K.Yoshimatsu;Y.Kondo;K.Schneider;et al.
• 通讯作者: et al.

一様等方性乱流の秩序渦度シミュレーション

均匀各向同性湍流的有序涡度模拟

• 发表时间: 2010
• 作者: 芳松克則;岡本直也;金田行雄
• 通讯作者: 金田行雄

乱流混合層における乱流/非乱流界面近傍の渦構造と条件付き統計

湍流混合层中湍流/非湍流界面附近的涡结构和条件统计

• 发表时间: 2010
• 作者: 後藤崇;石原卓;金田行雄
• 通讯作者: 金田行雄

Direct Numerical Simulation of Turbulent Channel Flow at High Reynolds Number

高雷诺数湍流通道流的直接数值模拟

• 发表时间: 2008
• 期刊: Proceedings of International Symposium on Frontiers of Computational Science 2008 Y Kaneda, M Sasai and K Tachibana (Eds.)
• 作者: Koji Morishita;Takashi Ishihara and Yukio Kaneda
• 通讯作者: Takashi Ishihara and Yukio Kaneda