力積型個別要素法による湿式ビーズミルの粉砕性能評価

書誌事項

タイトル別名
  • The Evaluation for Wet Grinding Performance of Beads Mill Using Impulse-Based DEM
  • リキセキガタ コベツ ヨウソホウ ニ ヨル シッシキ ビーズミル ノ フンサイ セイノウ ヒョウカ

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説明

<p>While the Discrete Element Method (DEM) is expected to evaluate wet grinding performance of bead mills, the conventional DEM requires high computational cost because it has the limitation of the time step size for stable computation. In addition, the simulation of wet grinding process requires additional cost to consider the interaction between beads and fluids by using such as CFD-DEM coupling techniques. This study proposes an analysis system for evaluating wet grinding performance of bead mills with less computational cost. Our proposed system adopts the Impulse-Based DEM (IB-DEM) which can use large time step size, the wall model by using the Sign Distance Function (SDF) which flexibly represents complicated shape walls, and the simple modeling of fluid force which can reduce computational cost. We verify our proposed system by comparing the numerical results with experimental results of bead mills with different shapes of rotors.</p>

収録刊行物

  • 粉体工学会誌

    粉体工学会誌 59 (10), 488-497, 2022-10-10

    一般社団法人 粉体工学会

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