Fukuda Tomoo

写真a

Title

Associate Professor

Researcher Number(JSPS Kakenhi)

00709694
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Current Affiliation Organization 【 display / non-display 】

  • Duty   University of the Ryukyus   Faculty of Engineering   School of Engineering_Civil Engineering Program   Associate Professor  

  • Concurrently   University of the Ryukyus   Graduate School of Engineering and Science   Associate Professor  

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Research Interests 【 display / non-display 】

  • 水理学

  • 河川工学

  • 計算力学

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Published Papers 【 display / non-display 】

  • EFFECT OF RIVERBED ROUGHNESS SPECTRUM ON ENERGY REQUIRED FOR EROSION OF COHESIVE RIVERBEDS

    Noriki MAEDA, Tomoo FUKUDA

    Japanese Journal of JSCE Special Issue (Applied Mechanics)Paper ( Japan Society of Civil Engineers )  82 ( 15 ) n/a - n/a   2026 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

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  • TURBULENT STRUCTURE IN SEDIMENT FLOWS OF SINGLE SIZED PARTICLE WITH DIFFERENT CONCENTRATIONS ANALYZED BY THREE-DIMENSIONAL NUMERICAL SIMULATIONS OF COUPLED SOLID AND FLUID MOTIONS

        2025.12 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

  • ENERGY EXPENDED FOR SURFACE AND MASS EROSION IN COHESIVE BED

    Noriki MAEDA, Tomoo FUKUDA

    Japanese Journal of JSCE ( Japan Society of Civil Engineers )  81 ( 16 ) n/a - n/a   2025 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

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  • EFFECTS OF VELOCITY GRADIENT AND PARTICLE SIZE DISTRIBUTION ON THE SEGREGATION MOTION OF MIXED SEDIMENT FLOWS ANALYZED BY USING NUMERICAL SIMULATION OF THREE-DIMENSIONAL COUPLED SOLID-FLUID MOTIONS

    Eiji YAMAGUCHI, Tomoo FUKUDA

    Japanese Journal of JSCE   81 ( 16 ) n/a   2025 [ Peer Review Accepted ]

    Type of publication: Research paper (other science council materials etc.)

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  • ANALYSIS OF FLUID FLOW AROUND A GRAVEL BAG AND FLUID FORCES BY USING HYDRAULIC EXPERIMENTS

    Hiroyuki TAKANO, Tomoo FUKUDA

    Japanese Journal of JSCE ( Japan Society of Civil Engineers )  81 ( 16 ) n/a - n/a   2025 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

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Other Papers 【 display / non-display 】

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Academic Awards 【 display / non-display 】

  • Kyoto Young Dam Engineers Award International Symposium on DAMS FOR ACHANGING WORLD

    2012.06   ICOLD   Study on Flushing Mechanism of Dam Reservoir Sedimentation and Recovery of Riffle-Pool in Downstream Reach by a Flushing Bypass Tunnel

    Winner: Tomoo Fukuda

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Grant-in-Aid for Scientific Research 【 display / non-display 】

  • Multiphase continuum model for mixed-size fluid-particle flows based on visualization of interaction forces

    Grant-in-Aid for Scientific Research(C)

    Project Year: 2023.04  -  2026.03 

    Direct: 3,700,000 (YEN)  Overheads: 4,810,000 (YEN)  Total: 1,110,000 (YEN)

  • Numerical investigation on stability of gravel bags in flooding as flexible riverbank protection works and a new design method

    Grant-in-Aid for Scientific Research(C)

    Project Year: 2019.04  -  2022.03 

    Direct: 3,400,000 (YEN)  Overheads: 4,420,000 (YEN)  Total: 1,020,000 (YEN)

  • Effects of sizes and shapes of particles on water and particle motions and bed structures in gravel-bed rivers

    Grant-in-Aid for Research Activity start-up

    Project Year: 2013.08  -  2015.03 

    Investigator(s): FUKUDA TOMOO 

    Direct: 2,100,000 (YEN)  Overheads: 2,730,000 (YEN)  Total: 630,000 (YEN)

    　View Summary

    We conducted numerical mixed-size gravel movable-bed experiments using a numerical movable-bed channel capable of simulating motions of flow and gravel. To investigate effects of particle sizes on their motions, contact forces of moving particles exerted in collision with movable bed were measured for each particle size in the experiment. The result showed that relatively large particles received more upward contact forces than those of small particles. We also conducted numerical movable-bed experiments with spheres. Effects of particle shapes on gravel motions were investigated by the comparison between gravel and sphere motions. The result showed that a difference of fractional sediment transport rates of gravel was smaller than that of spheres.

  • Investigation of dynamic mechanisms near river beds employing a numerical mixed-size movable-bed channel with arbitrary shaped particles

    Grant-in-Aid for challenging Exploratory Research

    Project Year: 2013.04  -  2015.03 

    Investigator(s): FUKUOKA SHOJI, UCHIDA Tatsuhiko, FUKUDA Tomoo 

    Direct: 3,100,000 (YEN)  Overheads: 4,030,000 (YEN)  Total: 930,000 (YEN)

    　View Summary

    We developed a numerical movable-bed channel capable of simulating three-dimensional motions of flows and gravel particles in different shapes. Flow and gravel motions and forces exerting them that have been difficult to measure were predicted by numerical movable-bed experiments. The result of the experiments showed that large particles were nearly in rectilinear motions in upper positions on the bed surface and small particles took detours in the lower positions. It was also showed that relatively large particles affected greatly by their shapes in motion and settlement.

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