Analysis of the discontinuities in magnetized bubbling fluidized beds
Analysis of the discontinuities in magnetized bubbling fluidized beds
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DOI：
10.1016/0009-2509(96)00268-0
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发表时间：
1996-10
影响因子：
4.7
通讯作者：
S. Brandani;G. Astarita
中科院分区：
文献类型：
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作者：
S. Brandani;G. Astarita
提出了一个一维模型来研究磁化流化床的主要特性。 Foscolo 和 Gibilaro 颗粒床模型被假定为评估流体动力学对稳定作用的贡献的基础，而磁力则根据 Rosensweig 和 Ciprios (Powder Technol.64, 115–123, 1991) 表示。推导了稳定性极限，并将 Kotchine 分析应用于模型，以研究双曲偏微分方程组产生的不连续性的结构。这样可以定性地了解作用在颗粒上的磁力所产生的影响。本研究主要集中在不足以稳定床（即磁化鼓泡流化床）的磁场的影响。讨论了对颗粒相和气相的定性影响。
A one-dimensional model is presented to study the main characteristics of magnetized fluidized beds. The Foscolo and Gibilaro particle bed model is assumed as the basis for the evaluation of the fluid-dynamic contributions to stabilization, while the magnetic forces are expressed according to Rosensweig and Ciprios (Powder Technol.64, 115–123, 1991). The stability limit is derived and the Kotchine analysis is applied to the model to study the structure of the discontinuities arising from the system of hyperbolic PDEs. This allows a qualitative understanding of the effects due to magnetic forces acting on the particles. The present study is mainly focused on the effect of a magnetic field which is not sufficient to stabilize the bed, i.e. magnetized bubbling fluidized beds. Qualitative effects on both the particle phase and the gas phase are discussed.