Experimental study and Shannon entropy analysis of pressure fluctuations and flow mode transition in fluidized dense phase pneumatic conveying of fly ash

被引：13

作者：

Alkassar, Yassin ^{[1
]}

Agarwal, Vijay K. ^{[1
]}

Pandey, R. K. ^{[2
]}

Behera, Niranjana ^{[3
]}

机构：

[1] Indian Inst Technol Delhi, Machine Dynam & Maintenance Engn Ctr, Ind Tribol, New Delhi 110016, India

[2] Indian Inst Technol Delhi, Dept Mech Engn, New Delhi 110016, India

[3] Vellore Inst Technol Univ, Sch Mech Engn, Vellore 632014, Tamil Nadu, India

来源：

PARTICUOLOGY | 2020年 / 49卷

关键词：

Fluidized dense phase; Mode transition; Wavelet; Shannon entropy; TRANSIENT PARAMETER ANALYSIS;

D O I：

10.1016/j.partic.2019.03.003

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The objective of this study was to relate experimental pressure fluctuation behavior to the transition in mode of flow observed in fluidized dense phase pneumatic conveying of fly ash. Shannon entropy and wavelet analysis were utilized to extract features of the flow regimes. Daubechies db4 wavelet analysis of pulsating air pressure revealed that the flow mechanism of fly ash in a fluidized dense phase possessed non-steady characteristics associated with gradual aeration of dunes along the direction of flow. Variations of Shannon entropy values along the length of the pipeline were assessed to determine the location at which the flow converted from dense to dilute phase mode. The effects of conveying parameters and specific power consumption on Shannon entropy and variations of the local power consumption coefficient are discussed. (C) 2019 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.

引用

页码：169 / 178

页数：10

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