Current Affiliation Organization 【 display / non-display 】

Current Affiliation Organization 【 display / non-display 】

Published Papers 【 display / non-display 】

Published Papers 【 display / non-display 】

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

  Eiji YAMAGUCHI,Tomoo FUKUDA

  ( Japan Society of Civil Engineers )  82 ( 16 )   2026.02 [ 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

  ( Japan Society of Civil Engineers )  81 ( 16 )   2025.02 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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• EFFECT OF DIMENSIONLESS FLOW DEPTH ON CONCENTRATION OF LARGE PARTICLES AT THE FRONT OF SEDIMENT FLOWS

  Eiji YAMAGUCHI,Tomoo FUKUDA

  ( Japan Society of Civil Engineers )  80 ( 16 )   2024.02 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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• INVESTIGATION ON TURBULENT STRUCTURE OF SEDIMENT FLOWS OF SINGLE SIZED PARTICLE BY USING THREE-DIMENSIONAL SOLID-FLUID MULTIPHASE SIMULATION

  Eiji YAMAGUCHI,Tomoo FUKUDA,Wataru IWAKIRI

  Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic engineering) ( Japan Society of Civil Engineers )  78 ( 2 ) I_895 - I_900   2023.01 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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  We performed three cases of three-dimensional numerical simulations of uniform sediment flows of single-sized particles in different slopes by using a solid-fluid multiphase simulation model and demon-strated that the sediment volume concentrations of the simulation results were able to agree with those obtained from the equation of the equilibrium sediment volume concentration. We also obtained spec-trum of flow velocities at different heights by fourier analysis from the simulation results and investigat-ed turbulent structure of sediment flows. The velocity spectrum showed that the peak of velocity spec-trum was appeared near the free surface in the highly-concentrated sediment flows in the great slope channel. It was also demonstrated that the velocity spectrums in different scale was closer to each other near the free surface in highly-concentrated sediment flows compared with those in the low concentra-tion sediment flows.

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