The Influence of an Acoustic Field on the Bed Expansion of Fine Particles

›› 2011, Vol. 19 ›› Issue (4): 649-655.

The Influence of an Acoustic Field on the Bed Expansion of Fine Particles

Akash M. Langde¹, R. L. Sonolikar²

1. Anjuman College of Engineering and Technology, Nagpur, Maharashtra, India;
2. Laxminarayan Institute of Technology, Nagpur, Maharashtra, India

收稿日期:2010-09-29 修回日期:2011-07-04 出版日期:2011-08-28 发布日期:2011-08-28
通讯作者: Akash M. Langde,E-mail:akashlangde@gmail.com

The Influence of an Acoustic Field on the Bed Expansion of Fine Particles

Akash M. Langde¹, R. L. Sonolikar²

1. Anjuman College of Engineering and Technology, Nagpur, Maharashtra, India;
2. Laxminarayan Institute of Technology, Nagpur, Maharashtra, India

Received:2010-09-29 Revised:2011-07-04 Online:2011-08-28 Published:2011-08-28

摘要/Abstract

摘要： Fine particles are difficult to fluidize due to strong interparticle attraction.An attempt has been made to study the bed expansion of silica gel(d_p=25μm) powder in presence of an acoustic field.A 135 mm diameter fluidized bed activated by an acoustic field with sound intensity up to 145 dB and frequency from 90 Hz to 170 Hz was studied.The effects of sound pressure level, sound frequency and particle loading on the bed expansion were investigated.Experimental results showed that, bed expansion was good in presence of acoustic field of particular frequency.In addition, it was observed that in presence of acoustic field the bed collapses slowly.

关键词: acoustic field, frequency, vibration, fluidized bed, fine powder, expansion

Abstract: Fine particles are difficult to fluidize due to strong interparticle attraction.An attempt has been made to study the bed expansion of silica gel(d_p=25μm) powder in presence of an acoustic field.A 135 mm diameter fluidized bed activated by an acoustic field with sound intensity up to 145 dB and frequency from 90 Hz to 170 Hz was studied.The effects of sound pressure level, sound frequency and particle loading on the bed expansion were investigated.Experimental results showed that, bed expansion was good in presence of acoustic field of particular frequency.In addition, it was observed that in presence of acoustic field the bed collapses slowly.

Key words: acoustic field, frequency, vibration, fluidized bed, fine powder, expansion

Akash M. Langde, R. L. Sonolikar. The Influence of an Acoustic Field on the Bed Expansion of Fine Particles[J]. , 2011, 19(4): 649-655.

参考文献

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The Influence of an Acoustic Field on the Bed Expansion of Fine Particles

The Influence of an Acoustic Field on the Bed Expansion of Fine Particles

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