Title of article :
Resonant and non-linear behaviour in vibrationally fluidised beds
Author/Authors :
Christopher M. Wensrich، نويسنده , , C.M. and Collard، نويسنده , , A.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2006
Pages :
8
From page :
30
To page :
37
Abstract :
This paper presents an experimental examination of the behaviour of vibrationally fluidised granular materials. This work was principally focused on examining the resonant behaviour of these systems. The harmonic response of a column of various granular materials (Geldart type A and B) was measured using a small apparatus. These materials displayed several non-linear effects such as; a normalised response that was dependent on excitation level, multiple harmonic components in the response to a single excitation frequency, and odd behaviour in terms of the motion of the emulsion. sonant peaks were found for each material. The relative magnitudes of these two peaks were heavily dependent on excitation level, so much so that at high levels of excitation only the higher resonant frequency was present. In each case, some correlation was found between this resonant peak and a prediction based on a “granular-gas” estimate of the speed of sound in the fluidised emulsion. This correlation was further examined by studying the resonant of the system under various levels of partial vacuum. The prediction followed the trend correctly.
Keywords :
Vibrational fluidisation , Non-linear vibration , granular materials
Journal title :
Powder Technology
Serial Year :
2006
Journal title :
Powder Technology
Record number :
1696390
Link To Document :
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