Study of cross-scale coupling in space plasma via large-scale Vlasov simulations
| Project/Area Number |
23740367
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Space and upper atmospheric physics
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| Research Institution | Nagoya University |
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Principal Investigator |
UMEDA Takayuki 名古屋大学, 太陽地球環境研究所, 助教 (40432215)
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| Research Collaborator |
ITO Yosuke 名古屋大学, 工学研究科, 修士課程
FUKAZAWA Keiichiro 九州大学, 情報基盤研究開発センター, 助教
NARYUKI Yasuhiro 富山大学, 人間発達科学部, 准教授
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | プラズマ科学 / 計算機シミュレーション / 計算科学 / 第一原理 / 地球惑星科学 / ハイパフォーマンスコンピューティング |
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| Research Abstract |
We study numerical schemes for the first-principle Vlasov code as a post-Peta-scale computer simulation technique of space plasma. We developed numerical algorithms for solving the collisionless Boltzmann (Vlasov) equation which is a hyper-dimensional conservation law. The new simulation code is parallelized for scalar massively parallel computers with more than 10,000 CPU cores. The new code is applied to various multi-scale processes in space plasma. The first global Vlasov simulation of a magnetized astronomical body is succeeded. Also, it is shown that temporal evolution of fluid-scale Kelvin-Helmholtz vortices generated at a velocity-shear layer is strongly affected by the particle-scale ion gyro motion.
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Report
(3 results)
Research Products
(48 results)
