| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
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| Research Abstract |
The Discrete Element Method(DEM) is widely used to figure out the complicated phenomena related to solid particle behavior. On the other hand, the DEM could not be applied to large scale systems because of the excessive calculation cost. In fact, the number of the calculated particles became a few hundred thousand by using a latest PC. Namely, the DEM could not be applied to industrial systems, where over billion particles were dealt with. Accordingly, development of a large-scale model of the DEM is desired now. To solve this problem, we have developed a coarse grain model of the DEM, where large-sized modeled particle represents a group of original particles. The coarse grain model was applied to typical gas-solid and solid-liquid flows. In the past studies, adequacy of the coarse grain model was shown by numerical examples. Validation of the coarse grain model was required for the practical usage. In the present study, we show the adequacy of the coarse grain model by the validation tests.
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