The effect of interparticle forces on fluidization regimes in the magnetized fluidized beds
The effect of interparticle forces on fluidization regimes in the magnetized fluidized beds
复制标题
磁化流化床中颗粒间力对流化状态的影响
DOI：
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复制
发表时间：
1999
期刊：
影响因子：
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通讯作者：
H. Kim
中科院分区：
文献类型：
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作者：
Woo;G. Jovanovic;H. Kim
This paper investigated the influence of interparticle forces on the quality of fluidization in a magnetically stabilized fluidized bed (MSFB), where we can “artificially” create interparticle forces (Fattr) of any magnitude by applying an external magnetic field to ferromagnetic particles. A theoretical model was proposed which predicts the transition point from a homogeneous to a heterogeneous fluidization as a function of the magnitude of the interparticle force and other physical characteristics of both particles and fluids that are usually observed in fluidizationρp, ρf,μ, dp, ε). The concept of the elastic wave velocity, Ue, and the continuity wave velocity, Uε, was introduced. In particular, the interparticle force manipulated by an externally applied magnetic field was taken into account in addition to a general consideration of a conventional fluidized bed. Bubbles form in a bed when the continuity wave velocity becomes faster than the elastic wave velocity. The simulation demonstrated the proposed model could predict the transition point of fluidization regime with reasonable accuracy.
