Power Spectral Density Analysis of Pressure Fluctuation in Pneumatic Conveying of Powders

被引：7

作者：

Behera, Niranjana ^{[1
]}

Agarwal, Vijay K. ^{[2
]}

Jones, Mark ^{[3
]}

Williams, Kenneth C. ^{[3
]}

机构：

[1] VIT Univ, Sch Mech & Bldg Sci, Vellore 632014, Tamil Nadu, India

[2] Indian Inst Technol, ITMMEC, New Delhi, India

[3] Univ Newcastle, Sch Engn, Ctr Bulk Solids & Particulate Technol, Newcastle, NSW 2300, Australia

来源：

PARTICULATE SCIENCE AND TECHNOLOGY | 2015年 / 33卷 / 05期

关键词：

alumina; dense; dilute; fly ash; power spectral density; transient; FLOW PATTERN; TURBULENCE; PARTICLES; VELOCITY; SYSTEMS;

D O I：

10.1080/02726351.2015.1008079

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In order to reveal the unsteady features of gas-solid flow, the pressure fluctuations were measured at different locations along the length of the pipeline while conveying powders through the pipeline. Power spectral density (PSD) functions were obtained for the analysis of the pressure fluctuation. Two types of powders (fly ash and alumina) were used in this analysis. The PSD analysis was conducted by taking into account different aspects such as flow conditions (dilute or dense), location of transmitter (top and bottom transmitters), location of transmitter along the length of the pipeline (three different locations), material property (fly ash or alumina), etc. Analysis of signals from top and bottom transmitters shows that it is not possible to identify the flow mode at upper and lower portions of pipeline. The magnitude of power is found to be higher for alumina as compared to fly ash. PSD parametric analysis reveals that frequency bandwidth and average power decreases exponentially with increase in solid loading ratio.

引用

页码：510 / 516

页数：7

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