3-D numerical simulations of a growing planet with the core formation
| Project/Area Number |
24740310
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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 |
Solid earth and planetary physics
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| Research Institution | Japan Agency for Marine-Earth Science and Technology |
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Principal Investigator |
FURUICHI Mikito 独立行政法人海洋研究開発機構, 数理科学・先端技術研究分野, 主任研究員 (50415981)
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| Research Collaborator |
NAKAGAWA Takashi 独立行政法人海洋研究開発機構, 数理科学・先端技術研究分野, 主任研究員 (50396941)
NISHIURA Daisuke 独立行政法人海洋研究開発機構, 数理科学・先端技術研究分野, 技術研究員 (60509719)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 惑星形成 / 始源物質リザーバー / 初期地球 / ストークス流れ / 移流陰解法 / JNFK / コア形成 / JFNK型非線形ソルバー / 地球深部異常領域 / マントル対流 / MIC / TR-BDF2 / 大規模非線形問題 / クリロフ部分空間法 / 深部異常領域 / 地球内部ダイナミクス / 惑星形成・進化 / 線形ソルバー |
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| Outline of Final Research Achievements |
I have conducted the 3-D Stokes flow simulation under a self-gravitating field with a free-surface to investigate the material differentiation process during core formation stage. A target of my work is the internal change of the planet grown by the impact induced magma ponds in a time scale of the deformation of a mantle rock. Results of numerical simulation indicate that the initial Mars-sized proto planet might not be completely differentiated with the magma pond because thick differentiated mantle layer are produced with the core formation. Thus, I propose a new scenario for creating the compositional heterogeneity with remaining dense material originate from the proto planet. In addition in order to incorporate the thermal differentiation to our model, a new implicit advection time stepping method is proposed which can efficiently solve thermal convection surrounded by deformable free surface boundaries.
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Report
(4 results)
Research Products
(27 results)
