| Project/Area Number |
24656524
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Naval and maritime engineering
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| Research Institution | The University of Tokyo |
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Principal Investigator |
SATO Toru 東京大学, 新領域創成科学研究科, 教授 (30282677)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | CO2海域地中貯留 / CO2漏洩の環境影響 / 海底堆積層 / 気泡径 / 砂粒子径 / 気固液三相流 / 水槽実験 / 格子ボルツマン法 / 気固液三相流数値シミュレーション |
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| Research Abstract |
sub-seabed storage has the risk of seepage due to the accidental failure of pipeline infrastructure or large diastrophism like a big earthquake. CO2 bubble size is an important parameter to estimate its environmental impact, because it affects the rise velocity of the bubbles and the dissolution rate of CO2 into seawater. Using the water tank, in which various sand is packed with water, air was poured in from the bottom and, then, the bubble size was measured when they seeped out from the sediment surface.
Moreover, a numerical simulation code was developed adopting the lattice Boltzmann method to analyze gas-water-sand three-phase flow. In the model, an equation of motion of each sand grain was solved directly, considering the collision of particles each other.
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