Experimental and numerical study on a bubbling fluidized bed with wet particles
Experimental and numerical study on a bubbling fluidized bed with wet particles
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湿颗粒鼓泡流化床实验与数值研究
DOI：
10.1002/aic.15195
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发表时间：
2016-06
期刊：
影响因子：
3.7
通讯作者：
Peng Wengen
中科院分区：
文献类型：
--
作者：
Wang Tianyu;He Yurong;Tang Tianqi;Peng Wengen
由于颗粒间的液桥在颗粒系统中起着重要的作用，因此对流化床中湿颗粒的流动流体动力学进行分析，对于改进反应器设计和工艺优化具有重要意义。因此，本文对鼓泡流化床中的湿颗粒进行了实验和数值研究。实验方面，采用颗粒图像测速技术，设计了鼓泡流化床。在这项工作中使用硅油，因为它是不挥发和透明的。在数值方面，通过在传统的软球相互作用模型中增加一个液桥模块，提出了一种改进的离散元法（DEM）数值方法。大多数物理参数的选择与实验设置相对应。DEM模拟与PIV测量结果吻合较好。考察了不同液体含量和表面气速的性能。©2016美国化学工程师学会学报，62:1970-1985,2016
As liquid bridge between particles acts an important role in the particle system, it is of considerable significance to analyze the flow hydrodynamics of wet particles in fluidized beds, which will improve the reactor design and process optimization. Thus, experimental and numerical investigations on wet particles in a bubbling fluidized bed are conducted in current work. On experimental side, particle image velocimetry (PIV) technology is employed with a designed bubbling fluidized bed. The silicone oil is used in this work because it is nonvolatile and transparent. On numerical side, a modified discrete element method (DEM) numerical method is developed by compositing an additional liquid-bridge module into the traditional soft-sphere interaction model. Most of the physical parameters are chosen to correspond to the experimental settings. Good agreements of particle velocity are found between the DEM simulation and PIV measurement. The performance of different liquid contents and superficial gas velocities are examined. © 2016 American Institute of Chemical Engineers AIChE J, 62: 1970–1985, 2016
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影响因子：
5.2
作者：
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通讯作者：
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影响因子：
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DOI：
10.1103/physreve.64.031302
发表时间：
2001-08
期刊：
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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