2012 Fiscal Year Final Research Report
Study of cross-scale coupling in space plasma via large-scale Vlasov simulations
| Project/Area Number |
23740367
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Space and upper atmospheric physics
|
|---|
| Research Institution | Nagoya University |
|---|
Principal Investigator |
UMEDA Takayuki 名古屋大学, 太陽地球環境研究所, 助教 (40432215)
|
|---|
| 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
|
|---|
| Project Period (FY) |
2011 – 2012
|
| 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 |
|---|
| 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.
|
Research Products
(28 results)
