| Project/Area Number |
21760141
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Fluid engineering
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| Research Institution | Sasebo National College of Technology |
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Principal Investigator |
JOHNO Yuuki Sasebo National College of Technology, 物質工学科, 准教授 (80353233)
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| Project Period (FY) |
2009 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 混相流 / 数値シミュレーション / 気泡流動層 / SPH法 / 粉体 / 化学工学 |
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| Research Abstract |
Air and Particle motions in a bubbling fluidized bed are numerically simulated using Smoothed Particle (SP) method for the particle phase. In the SP method, the partial differential equations, which are the governing equations for the flow fields of the particle phase, are transformed to the ordinary differential equations, which are Lagrangian-type equations. The numerical analysis of ordinary differential equations is much easier than that of partial differential equations. Moreover, Lagrangian analysis is suitable for the description of the characteristics of discrete particles. The Navier-Stokes equation and the Lagrangian type equation were simultaneously solved. The corresponding experiments were also performed. It is found that calculated results describe well the experimental instantaneous particle positions, and enable us to know the mechanisms of bubble formation, bubble coalescence and bubble disruption in a bubbling fluidized bed.
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