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| Mesoscale simulation and analysis of spouted bed with LBM-DEM four direction coupling |
| Received:April 20, 2017 Revised:July 25, 2017 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20170420001 |
| KeyWord:spouted bed four-directional coupling lattice Boltzmann method discrete element method numerical simulation |
| Author | Institution |
| 李斌 |
华北电力大学 动力工程系, 保定 |
| 张尚彬 |
华北电力大学 动力工程系, 保定 |
| 滕昭钰 |
华北电力大学 动力工程系, 保定 |
| 边禹铭 |
华北电力大学 动力工程系, 保定 |
| 张健 |
华北电力大学 动力工程系, 保定 |
| 巴星原 |
华北电力大学 动力工程系, 保定 |
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| Abstract: |
| It is important for the design and optimization of the spouted bed for its design and optimization.This paper developed the LBM-DEM four-directional coupling model based on the gas-solid two-phase flow.And it simulates the flow characteristics of particles in a single-hole jet-spouted bed.The gas phase is dealt with by the modified lattice Boltzmann method and the particle phase by the discrete element method.The bi-directional coupling between fluid phase and solid phase follows the Newton's third law.Forces among particles,and between particles and wall are realized by the soft sphere model.The effect of the fluidization process,the velocity distribution of particles and gas,the height change of the bed and the convection process of bed width are abtained.The results show that there is a strong internal circulation in the spouted bed.The increasement of bed width results in the decrease of particles' movement ability.The increase of jet velocity makes particles move more violently and the bed expansion height increase. |