Cluster Formation and Particle-Induced Instability in Gas-Solid Flows Predicted by the DSMC Method

• TANAKA Toshitsugu

  Department of Mechanical Engineering for Industrial Machinery, Osaka University

• YONEMURA Shigeru

  Department of Mechanical Engineering for Industrial Machinery, Osaka University

• KIRIBAYASHI Ken

  Sumitomo Metal Industries, Ltd.

• TSUJI Yutaka

  Department of Mechanical Engineering for Industrial Machinery, Osaka University

抄録

A numerical simulation is performed for a dispersed gas-solid flow in a vertical channel. Flow of the solid phase is obtained by calculating individual particle motions, i.e.by the Lagrangian method, while the gas flow is obtained by solving the equations of inviscid fluid. The Direct Simulation Monte Carlo (DSMC) method is used to take account of particle-to-particle collisions. Attention is paid to the case of low gas velocities and high solid loading, for which the solid phase strongly affects the gas flow field. Therefore the flow fields of gas and solid are determined simultaneously taking the interaction between both phases into consideration. It is found that the flow becomes unstable and inhomogeneous as the gas velocity decreases and the solid loading increases. Furthermore, effects of parameters such as the channel width and physical properties of particles on the instability and cluster formation are investigated.

収録刊行物

• JSME international journal. Ser. B, Fluids and thermal engineering

  JSME international journal. Ser. B, Fluids and thermal engineering 39 (2), 239-245, 1996-05-01

  一般社団法人日本機械学会

キーワード

• Multiphase Flow
• Gas-Solid Flow
• Circulating Fluidized Bed
• Cluster
• DSMC Method
• Numerical Simulation

詳細情報

• CRID: 1572824502001711232
• NII論文ID: 110002981367
• NII書誌ID: AA10888815
• ISSN: 13408054
• 本文言語コード: en
• データソース種別:
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