| Project/Area Number |
23340128
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | Kobe University |
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Principal Investigator |
Kageyama Akira 神戸大学, システム情報学研究科, 教授 (20260052)
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| Co-Investigator(Kenkyū-buntansha) |
政田 洋平 神戸大学, 大学院・システム情報学研究科, 助教 (30590608)
宮腰 剛弘 海洋研究開発機構, 地球内部ダイナミクス領域, 研究員 (60435807)
大野 暢亮 兵庫県立大学, シュミレーション学研究科, 准教授 (50373238)
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| Co-Investigator(Renkei-kenkyūsha) |
MASADA Youhei 愛知教育大学, 現代学芸課程宇宙物質科学専攻, 助教 (30590608)
MIYAGOSHI Takehiro 海洋研究開発機構, 地球深部ダイナミクス研究分野, 主任研究員 (60435807)
OHNO Nobuaki 兵庫県立大学, シミュレーション学研究科, 教授 (50373238)
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| Project Period (FY) |
2011-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥19,890,000 (Direct Cost: ¥15,300,000、Indirect Cost: ¥4,590,000)
Fiscal Year 2015: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2014: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2013: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2012: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2011: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
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| Keywords | 地球ダイナモ / 磁気流体力学 / データ可視化 / イン=ヤン格子 / MHDダイナモ / イン=ヤン=ゾン格子 / 地磁気 / 太陽磁場 / 磁場の起源 / バーチャルリアリティ / 可視化 |
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| Outline of Final Research Achievements |
We have performed high-resolution simulations of geodynamo in the spherical shell geometry using Yin-Yang grid and analyzed the generation mechanism of the magnetic field based on the concept of (almost) frozen-in field lines. Since our Yin-Yang dynamo code had a "cavity" at the center of the sphere, we could not solve the magnetic diffusion effect in the inner core. To resolve this problem, we have developed a new overset grid system, Yin-Yang-Zhong grid, for a full sphere including the origin. The Yin-Yang-Zhong grid enables us to perform MHD simulations in a ball. To analyze the geodynamo simulation data obtained by these simulation codes, we have developed an application program for immersive-type virtual reality (VR) systems. The VR visualization approach shares the problem of the massive data size with other post-process visualization methods. We have developed a new in-situ visualization method by which we can perform interactive viewing of in-situ visualization movies.
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