Effect of electric field on the hydrodynamics of fluidized nanoparticles

Kashyap, Mayank; Gidaspow, Dimitri; Driscoll, Michael J.

doi:10.1016/j.powtec.2008.01.010

Cited by 48 publications

(25 citation statements)

References 20 publications

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“…It seemed from Fig. 11 that the charged particles displayed different motion trends compared to the above mentioned conclusions of Kashyap et al [53] and van Willigen et al [27]. That was due to the focus point in the present work is different.…”

Section: Effects Of DC Electric Field On Particle Motionmentioning

confidence: 45%

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Effects of external electric field on bubble and charged particle hydrodynamics in a gas–solid fluidized bed

Sun

Yang

Zhu

2015

Advanced Powder Technology

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Section: Effects Of DC Electric Field On Particle Motionmentioning

confidence: 45%

“…Kashyap et al [53] measured the effect of electric field on the hydrodynamics of fluidized nanoparticles. When the electric field was 3 times of the gravity, the bed expansion decreased and the nanoparticles agglomerated.…”

Section: Effects Of DC Electric Field On Particle Motionmentioning

confidence: 99%

Effects of external electric field on bubble and charged particle hydrodynamics in a gas–solid fluidized bed

Sun

Yang

Zhu

2015

Advanced Powder Technology

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“…(3)), but the multitude of variables and the experimental conditions of the data summarized in Table 3 preclude the quantification of this force. Kashyap et al [47] studied the effect of an electric field on the hydrodynamics of particles in a rectangular fluidized bed. Thus, if the electrostatic forces can be quantified, the effects of an electric field could be included in the correlation as a term that increases the gas pressure drop along the bed.…”

Section: Discussion Of the Results Shown Inmentioning

confidence: 99%

On the minimum fluidization velocity in 2D fluidized beds

et al. 2011

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a b s t r a c tIn the present study, a new correlation for the determination of the minimum fluidization velocity in 2D fluidized beds was developed. The proposed correlation was based on the experimental results obtained in 2D fluidized beds with different particle sizes, bed thicknesses and bed heights. Thus, the proposed correlation depends only on the nondimensional variable t/d p , where t is the bed thickness and d p is the particle size. The proposed correlation was compared with other experimental results that can be found in the literature, and two different trends were observed. Namely, one set of experimental results was in accordance with the proposed correlation, while the other set deviated from the theoretical results. In particular, the minimum fluidization velocities of the experimental results were greater than the predicted values of the proposed correlation. In view of the differences in the experimental conditions, the observed discrepancies may be attributed to the effects of electrostatic charge and particle shape. In addition, the experimental fluidization defluidization curves were compared to the theoretical results of Jackson's model, and the parameters were fitted to the experimental data. However, Jackson's model is based on a 1D bed; thus, general parameters could not be obtained for a bed with a fixed particle size and thickness due to the two dimensional voidage distribution in the bed and bed cohesion effects, which are a result of electrostatic forces and are not considered in Jackson's model.

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“…In a second part of our work we will look at the effect on the fluidized bed expansion of an electrostatic field applied in the horizontal direction as recently investigated by Kashyap et al (2008). A main observation reported in the work of Kashyap et al (2008) is that the electric field markedly hindered bed expansion. In our work we will report similar observations.…”

Section: Introductionmentioning

confidence: 99%