Development of New computational Methods in Geo-magnetohydrodynamics

地磁流体动力学新计算方法的发展

• 批准号: 05302024
• 负责人: TERASAWA Toshio
• 金额: $ 9.54万
• 依托单位: University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Co-operative Research (A)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05302024/
• 关键词: Computational Physics; Parallel Processing; Magnetic Reconnection; Magnetohydrodynamic Turbulence; Nonlinear Plasma Waves; Fiinite-volume TVD Scheme; Magnetohydrodynamic Dynamo; Wavelet Analysis; 設併計算; ウエーブレット解析

New findings/development from this research project is as follows :1)Parallel processing algorithm for the MHD problems.Visualization methods are also established.2)New models for the solar wind-planetary magnetosphere interaction, and the magnetospheric convection problem.New simulation scheme for the finite-electron-mass two-fluid MHD/hybrid calculationEvidence of nonlinear cascade process in magnetotail turbulenceNew theoretical foundation for MHD intermediate shocksDiscovery of the stochastic acceleration process in slow shocks3)Parallel prosessing algorithm for the spherical harmonic expansion method4)Application of the wavelet analysis to the magnetotail turbulence

New findings/development from this research project is as follows :1)Parallel processing algorithm for the MHD problems.Visualization methods are also established.2)New models for the solar wind-planetary magnetosphere interaction, and the magnetospheric convection problem.New simulation scheme for the finite-electron-mass two-fluid MHD/hybrid calculationEvidence of nonlinear cascade process in magnetotail在慢速冲击中，随机加速过程的MHD中间冲击的湍流理论基础。3）平行性辅助算法用于球形谐波扩展方法4）将Wavelet分析应用于磁极尾巴湍流

项目成果

M.Matsushima: "Fluid Motion in the Earth's Core Derived from the Geomagnetic Field and Its Implications for the Geodynamo" Journal of Geomagnetism and Geoelectricity. 45. 1481-1495 (1993)

M.Matsushima：“地磁场产生的地球核心的流体运动及其对地球发电机的影响”地磁学和地电杂志。

M.Fujimoto: "Anomalous Ion Mixing within of MHD Kelvin-Helmholtz Vortex" J.Geophys.Res.(in press). (1994)

M.Fujimoto：“MHD 开尔文-亥姆霍兹涡旋内的异常离子混合”J.Geophys.Res.（正在出版）。

K.Sato: "Vertical Structure of Atmospheric Gravity Waves Revealed by the Wavelet Analysis" J.Geophys.Res.99. 20623-20631 (1994)

K.Sato：“小波分析揭示的大气重力波的垂直结构”J.Geophys.Res.99。

M.Fujimoto: "Anomalous ion mixing within an MHD scale Kelvin-Helmholtz vortex2.Effects of inhomogeneity" J.Geophys.Res.(in press).

M.Fujimoto：“MHD 尺度开尔文-亥姆霍兹涡旋 2 内的异常离子混合。不均匀性的影响”J.Geophys.Res.（正在出版）。

T.Tanaka: "Finite Volume TVD Scheme on an Unstructured Grid System for Three-Dimensional MHD Simulation of Inhomegenoeous Systems Including Strong Background Potential Fields" J.Computer Phys.3. 381-389 (1994)

T.Tanaka：“用于包括强背景势场的非均匀系统三维 MHD 模拟的非结构化网格系统的有限体积 TVD 方案”J.Computer Phys.3。