Transient parameter analysis of pneumatic conveying of fine particles for predicting the change of mode of flow

During the process of pneumatic conveying of fine particles, the flow mode may change from dense to dilute. In studying this mode change, we evaluate three parameters （Hurst exponent, Shannon entropy, and phase-space attractor size） used in signal analysis. Experimental data of pneumatic conveying o...

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Bibliographic Details
Published in:Particuology 2017-06, Vol.32 (3), p.82-88
Main Authors: J.S., Shijo, Behera, Niranjana
Format: Article
Language:English
Subjects:
Fluidized dense
Hurst exponent
Hurst指数
Phase space
Shannon entropy
气力输送过程
流动方式
流动模式
瞬态参数
细颗粒
赫斯特指数
预测
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Summary:During the process of pneumatic conveying of fine particles, the flow mode may change from dense to dilute. In studying this mode change, we evaluate three parameters （Hurst exponent, Shannon entropy, and phase-space attractor size） used in signal analysis. Experimental data of pneumatic conveying of fly ash at three locations along a 173-m-long pipeline were used for this analysis. Variations in magnitude of the Hurst exponent, Shannon entropy, and size of the phase space attractor exhibit different trends in their variations for dense and dilute mode of flow. From these trends it is possible to predict the change from dense to dilute mode and the location along the length of the pipeline of this change in mode of flow.
ISSN:1674-2001
2210-4291
DOI:10.1016/j.partic.2016.07.004