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February 22, 2026Japanese Journal of JSCE0 citations

Three Dimensional Simulation of Sediment Diversion Control Using AIrfoil Vane

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KOKazuyuki OTADKDaisuke KOBAYASHI

Key Points

  • The study aims to clarify the mechanism of sediment diversion control using airfoil vanes through experimental and numerical analyses.
  • Conducted moving bed experiments and three-dimensional sediment transport analysis.
  • Developed an analysis solver to efficiently solve the equations of motion and continuity.
  • Performed numerical simulations to replicate experimental results.
  • Numerical analysis aligned well with experimental findings on sediment diversion effectiveness.
  • Airfoil vane shapes created specific flow patterns that led to sediment deposition downstream.
  • The suppression of flow separation around the vane significantly enhanced sediment control.

Abstract

翼形状を持つ翼型ベーンの土砂分派制御について，移動床実験と3次元河床変動解析を通じてそのメカニズムを明らかにした．解析では計算効率に配慮し，掃流砂の運動方程式と連続式をEuler的に解く過程を取り入れた解析ソルバを構築し，実験の再現計算を行った．解析と実験の分派制御効果は良好に整合した．解析結果を分析すると，翼型ベーン周辺の剥離流の抑制によって翼型形状に沿う河床付近流れおよび旋回流が生じ，掃流砂および浮遊砂をベーン下流に導流し，取水口前面での河床低下を促すことが示された．この機構によって，翼型ベーンは高い分派制御効果を持つ．本研究の成果は翼型ベーンの土砂分派機能について科学的根拠を与え，現場実装に資する数値解析モデルを提示するものである．

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Cite This Study

OTA et al. (2026) studied this question.

synapsesocial.com/papers/699a9cc6482488d673cd27a9https://doi.org/10.2208/jscejj.25-16038
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