| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
Parallel computation methods were investigated to predict multiphase phenomena as observed in natural disasters, in which mechanical and thermal interactions between fluid and solid phases are essentially important.
Two types of computation methods were mainly examined: (1) a Lagrangian-Eulerian method that solves gas and liquid phases in Eulerian cells while solid phases represented by multiple tetrahedron elements are calculated in a Lagrangian way and (2) a full-Eulerian method that deals with all phases including largely deformable solid objects in Eulerian cells fixed in space. Both computation methods allow us to estimate fluid forces acting on solid objects accurately in addition to the solid-solid interactions.
The applicability of the computation methods using parallel supercomputers were confirmed through the comparisons with experimental results obtained with about 17,000 gravel particles as well as numerical experiments including about 100,000 solid particles.
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