Flow pattern formation in a geophysical thermal convection system

地球物理热对流系统中流型的形成

• 批准号: 20340018
• 负责人: YAMADA Michio
• 金额: $ 12.4万
• 依托单位: Kyoto 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 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20340018/
• 关键词: 応用数学; 流体; 熱対流; 球殻内対流; 回転流体; 安定性; 分岐図

Thermal convection in a rotating spherical shell, typical in earth and planetary sciences, is studied with an attention focused on its dependence on the angular velocities of the inner and the outer boundaries and on the temperature difference between the boundaries. The bifurcation diagram is obtained, where the zonal phase velocity of the convection pattern is found to change its direction, and its physical interpretation is given in terms of the vorticity dynamics and weakly nonlinear theory. Dynamical interaction between the boundaries and the fluid is also studied to find the differential rotation and chaotic behaviors of the boundaries.

研究了地球和行星科学中典型的旋转球壳中的热对流，重点关注其对内外边界角速度和边界之间温差的依赖性。得到了对流型的纬向相速度改变方向的分岔图，并根据涡度动力学和弱非线性理论给出了其物理解释。研究了边界与流体之间的动力学相互作用，发现了边界的微分旋转和混沌行为。

项目成果

Development of cloud convection model to investigate the Jupiter's atmosphere

开发云对流模型来研究木星的大气层

• 发表时间: 2008
• 期刊: Nagare Multimedia (online journal, http : //www2/nagare. or. jp/mra/2008/ sugiyama)
• 作者: S.V.Gervacio;H.Maehara;Toshiyasu Arai;Shin-ichi Takehiro;N.Tokushige;Toshiyasu Arai;K. Sugiyama
• 通讯作者: K. Sugiyama

波による秩序流形成の定量的評価について

波浪形成有序流的定量评价

• 发表时间: 2012
• 作者: H.Maehara;N.Tokushige;Toshiyasu Arai;竹広真一;Toshiyasu Arai;H.Maehara;Michio Yamada;Toshiyasu Arai;H.Maehara;Michio Yamada;Toshiyasu Arai;H.Maehara;山田道夫
• 通讯作者: 山田道夫

Linear stability of steady zonal jet flows induced by a small-scale forcing on a beta plane

β 平面上小尺度强迫引起的稳定纬向射流的线性稳定性

• 发表时间: 2011
• 期刊: Physica D
• 影响因子: 4
• 作者: Kiori Obuse;Shin-ichi Takehiro;Michio Yamada
• 通讯作者: Michio Yamada

Rossby waves and zonal flow generation. JIFT workshop : Hierarchical Self-Organization of Turbulence and Flows in Plasmas

罗斯贝波和纬向流的产生。

• 发表时间: 2011
• 作者: N.Tokushige;H.Maehara;Toshiyasu Arai;山田道夫;Toshiyasu Arai;H.Maehara;山田道夫;Masanobu Inubushi;Toshiyasu Arai;H.Maehara;Michio Yamada
• 通讯作者: Michio Yamada

Rossby waves and zonal flow generation

罗斯贝波和纬向流生成

• 发表时间: 2011
• 作者: H.Maehara;N.Tokushige;Michio Yamada
• 通讯作者: Michio Yamada