日本財団 図書館


39. National Defense Academy Department of Mechanical Systems
 
Research Project  Period  Researcher(s)  Overview 
Plan 2002
1. Research on wave generators in circulating water channels 5 3 K. Suzuki Develops prototype wave generators for uni-directional waves in circulating water channels.
2. Research on Reynold's stress transfer 1 1 K. Yabushita Measures the diffusion structure of Reynold's stress in the flow field around the ship body for numerical calculation using Reynold's mean N-S equation.
3. Development of non-linear finite analysis method 5 3 K. Yabushita Develops non-linear finite analysis method for exact discretization of non-linear diffusion terms of the N-S equation to obtain guidance for practical calculation.
4. Research on energy absorption type wave generators by separating incident and reflected waves 3 3 H. Kihara Studies hydrodynamic interaction between the wave generation body and wave at active wave energy absorption to improve the performance of such wave generators.
5. Development of strength analysis method for large-scale structures being used as very large floating structures 2 1 H.Seto Develops a theoretical calculation method for strength evaluation of partial members considering the effects induced by wave and vibration by introducing a rational multi-step analysis method for structural analysis of very large structures such as the Mega-float, which are difficult to analyze by commercial calculation codes.
6. Research on algorism of large-scale calculation by boundary element method     H. Seto The newly developed direct block matrix makes it possible to analyze tens of thousands of freedom through the boundary element method instead of the conventional approach, which is considered to solve only thousands of freedom. This new method is expanded for application to sound as well as elastic fields from wave and flow fields for renewal of the boundary element algorism.
7. Calculation of fluctuating pressure based on MPS method 3 2 S. Hibi Improves the MPS method as one of the particle methods recently receiving attention as representing fluid motions to solve problems when calculated results of fluctuating pressure by conventional MPS show divergence.
 
 
40. Toyo University Department of Mechanical Engineering
 
Research  Period  Researcher(s)  Outline 
Plan 2002
1. Research on mechanism of frictional resistance reduction by micro-bubble 7 7 H. Katoh Experimental research on mechanism of frictional resistance reduction by micro-bubble by measuring velocity, turbulence and void distribution in turbulent flow including micro-bubbles in circulating water channel.
2. Emulsification dispersion of leaked oil at sea by cavitation jet 6 6 H. Katoh Research on accelerating emulsification dispersion by cavitation jet upward to C-class heavy oil floating on the sea surface.
3. Dissolution of plankton by cavitation 7 5 H. Katoh Research on dissolution of plankton by cavitation as a disposal method of ballast water.







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