Investigation of free-s urface turbulent heat and mass transfer by means of large-scale direct numerical simulation and high-precision turbule nt measurement

通过大规模直接数值模拟和高精度湍流测量研究自由表面湍流传热传质

• 批准号: 21760156
• 负责人: YAMAMOTO Yoshinobu
• 金额: $ 3万
• 依托单位: University of Yamanashi (2011)Kyoto University (2009-2010)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21760156/
• 关键词: 自由表面流; 乱流熱物質移動; 直接数値計算; 乱流熱物資移動; 大規模直接数値計算; 気液界面; MHD; 乱流熱伝達; 自由表面乱流

In this study, we successfully conducted a direct numerical simulation of a high-Fr turbulent open-channel flow at a Froude number of 1. 8 and a Reynolds number of 2325 based on bulk velocity, gravitational acceleration, water depth, and kinetic viscosity, using the multi-interface advection and reconstruction solver(MARS). Near the free-surface, wall-normal turbulent intensity and energy-dissipation rates increase toward the free-surface, and the tendencies of turbulent statistical quantities near the free-surface are in good agreement with the experimental measurements obtained using a laser Doppler anemometer(LDA). Finally, we established the high-precision direct numerical simulator, which can be covered the effects of high-Pr heat transfer and magnetic force for design activity to the next generation fusion reactor engineering.

在这项研究中，我们以1. 8的数量成功地对高-fr湍流开放通道流进行了直接的数值模拟，并基于散装速度，重力加速度，水深和运动型粘度（动力学粘度）为2325的雷诺数为2325使用多接口对流和重建求解器（MARS）。在自由地面附近，壁正常的湍流强度和能量隔离率向自由表面增加，并且在自由表面附近的湍流统计量趋势与使用激光多普勒多普勒射线计获得的实验测量非常吻合（ LDA）。最后，我们建立了高精度直接数值模拟器，该模拟器可以涵盖高PR传热和磁力对下一代融合反应堆工程的影响。

项目成果

高フルード数開水路乱流場の直接数値シミュレーション

高弗劳德数明渠湍流场的直接数值模拟

• 发表时间: 2010
• 期刊: 混相流
• 作者: 山本義暢;功刀資彰
• 通讯作者: 功刀資彰

High-Pr Heat Transfer in Viscoelastic Drag-Reducing Turbulent Channel Flow, Green Energy and Technology

粘弹性减阻湍流通道流中的高Pr传热、绿色能源与技术

• 发表时间: 2009
• 期刊: Zero-Carbon Energy Kyoto
• 作者: Y. Yamamoto;T. Kunugi and C-F. Li
• 通讯作者: T. Kunugi and C-F. Li

High Performance Computing for MHD Turbulent Flows with high-Pr Heat Transfer

高 Pr 传热 MHD 湍流的高性能计算

• 发表时间: 2011
• 期刊: Zero-Carbon Energy Kyoto 2010 (T.Yao (ed.))
• 作者: Y.Yamamoto;T.Kungi
• 通讯作者: T.Kungi

Effects of very-large scale structures in a high-Reynolds turbulent channel flow on medium-high Prandtl

高雷诺湍流通道流中超大规模结构对中高普朗特的影响

• 发表时间: 2009
• 期刊: Turbulence, Heat and Mass Transfer 6, K.Hanjalic, Y.Nagao and S.Jakirlic(ed.)
• 作者: Y.Yamamoto;T.Kunugi;Y.Tsuji
• 通讯作者: Y.Tsuji

Direct Numerical Simulation of MHD Turbulent Flows with High-Pr Heat Transfer

高 Pr 传热 MHD 湍流的直接数值模拟

• 发表时间: 2011
• 期刊: Progress in Nuclear Science and Technology
• 作者: Y.Yamamoto;T.Kunugi
• 通讯作者: T.Kunugi