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

作　　者：Yassin Alkassar Vijay KAgarwal RKPandey Niranjana Behera 

机构地区：[1]Industrial Tribology,Machine Dynamic and Maintenance Engineering Centre,Indian Institute of Technology Delhi,New Delhi 110016,India [2]Department of Mechanical Engineering,Indian Institute of Technology Delhi,New Delhi 110016,India [3]School of Mechanical Engineering,Vellore Institute of Technology University,Vellore 632014,India

出　　处：《Particuology》2020年第2期169-178,共10页颗粒学报（英文版）

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.

关 键 词：Fluidized dense phase Mode transition WAVELET Shannon entropy 

分 类 号：O35[理学—流体力学]