| Project/Area Number |
12450400
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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 |
船舶工学
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| Research Institution | Osaka University |
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Principal Investigator |
HASEGAWA Kazuhiko Graduate School of Engineering, Osaka University, Professor, 大学院・工学研究科, 教授 (60106804)
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| Co-Investigator(Kenkyū-buntansha) |
TAKAGI Ken Graduate School of Engineering, Osaka University, Associate Professor, 大学院・工学研究科, 助教授 (90183433)
UMEDA Naoya Graduate School of Engineering, Osaka University, Associate Professor, 大学院・工学研究科, 助教授 (20314370)
MURAKWA Eiichi Joining and Welding Research Institute, Professor, 大学院・工学研究科, 教授 (60166270)
SUZUKI Hiroyoshi Graduate School of Engineering, Osaka University, Research Associate, 大学院・工学研究科, 助手 (00252601)
OSAWA Naoki Graduate School of Engineering, Osaka University, Associate Professor, 大学院・工学研究科, 助教授 (90252585)
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| Project Period (FY) |
2000 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥9,900,000 (Direct Cost: ¥9,900,000)
Fiscal Year 2001: ¥4,600,000 (Direct Cost: ¥4,600,000)
Fiscal Year 2000: ¥5,300,000 (Direct Cost: ¥5,300,000)
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| Keywords | ship / large-scale computation / distributed computation / real-time computation / visualization system |
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| Research Abstract |
It becomes of great importance to conduct very large-scale numerical calculation in various fields. It is generally said that the computation cost and time is nearly proportional to the square of the solution-space scale.
In this research project, we have conducted such large-scale computation in various fields from computational hydrodynamics, computational structure analysis, computational material engineering, and simulation of ship dynamics, some of which are necessary to be conducted in real time for visualization. The following conclusions are drawn.
1) Marine traffic simulator for congested waterways is developed. Further, model ship experiment was conducted in a virtual sea area produced by this simulator. The simulator was the server for the virtual marine traffic flow and for the control of the model ship. PCs on board are used to send and receive data such as GPS position data, Gyro ship motion data and command for the model ship such as rudder angle and propeller revolutions. This system is the main result of this project and distributed computation network is fully utilized using Internet and serial link.
2) Simulation program for ship capsize was developed. Mathematical model was revised to get more accurate result compared with model ship experiments. Besides, animation program was also developed to show how the ship will capsize. It is very good example of necessity of distributed computing to get faster computation. The program may be useful to understand the capsize phenomena visually and to use as a real-time simulator for ship masters to teach them how to avoid capsizing.
3) Life cycle assessment for marine and land transportation was conducted. The environmental effect was compared with marine and land transportation and it is found the effect of marine transportation is a fourth of that of trucks.
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