A flow intensification model for granular filter applications

作者：Qin Zhaohui^*

来源：Advanced Powder Technology, 2010, 21(2): 180-186.

DOI：10.1016/j.apt.2009.11.001

• Granular filtration
• Flow intensification
• Modeling
• Deposition

A flow intensification model was proposed for calculation of the initial collector efficiency of a granular filter. In this model, the flow acceleration within voids of granular media is taken into account with an intensification factor [I. Simple physical argument gives an estimation of beta, which should be close to 1 E. Creeping flow is assumed and Happel model is used to represent the granular media. After obtaining the flow field, the initial collector efficiency pia is calculated from trajectory analysis and compared with experimental data. The reasonably good agreement between the theory and experiments suggests that the current model is physically plausible and potentially useful for granular filter performance prediction if further theoretical development is implemented.

• 出版日期2010-3