| Project/Area Number |
16360045
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Engineering fundamentals
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
AOKI Takayuki Tokyo Institute of Technology, Global Scientific Information and Computing Center, Professor (00184036)
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| Co-Investigator(Kenkyū-buntansha) |
XIAO Feng TOKYO INSTITUTE OF TECHNOLOGY, Department of Energy Sciences, Associate Professor (50280912)
OGAWA Takanobu Seikei University, Faculty of Science and Technology, Professor (50338571)
AKIBA Hiroshi Allied Engineering Co., Development Manager (only 2004)
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| Project Period (FY) |
2004 – 2006
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| Project Status |
Completed (Fiscal Year 2006)
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| Budget Amount *help |
¥13,600,000 (Direct Cost: ¥13,600,000)
Fiscal Year 2006: ¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2005: ¥4,600,000 (Direct Cost: ¥4,600,000)
Fiscal Year 2004: ¥5,600,000 (Direct Cost: ¥5,600,000)
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| Keywords | Fluid-structure Interaction / Class Library / Parallel Computing / Immersed boundary / Discrete Element Method / AMR / CFD / IDO scheme / コロケート格子配置 / 固体-液体-気体混相流 / ボリュームレンダリング / 流体-液体連成問題 / 構造物破壊計算 / 数値解析クラス・ライブラリ / コロケーテッド格子配置 |
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| Research Abstract |
Fluid-structure interaction problems are still unknown phenomena and it is highly expected to study them by numerical simulations. In this study, the class library of C++ programming language was developed to analyze fluid-structure interaction problems. The library consists of fluid-simulation class with sophisticated numerical method, structure-analysis class, fluid-structure coupling class, grid generation class, parallel computing class, and visualization class. By combining these classes depending on the problems, numerical simulation codes are easily constructed.
In the fluid-simulation class, high-accurate numerical method was developed and the stable coupling method on the collocated grid was proposed in which easily introduces fluid-structure interaction. This method is also easily applicable to parallel computing and the explosion simulation was executed by 2000 CPU of a PC-Cluster system. In the AMR sub-class, it is possible to refine the mesh of the tree-data structure with third-order spatial accuracy. It is found that the overset grid sub-class is quit effective for rigid body of transform and rotational motion in fluid. The torque of the wind turbine was studied with using this sub-class. We developed the sub-class of Immersed boundary method which makes it possible to treat complex shapes on Cartesian grid. The sub-class of Distinct Element Method was used to study destruction of the structure with mass-spring model. The sub-class of photo-realistic rendering could visualize the bubbly flow and meso-scale typhoon simulation and made high-quality animations by using POV-Ray software. These ware highly evaluated.
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