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
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
收藏
页码:510 / 516
页数:7
相关论文
共 13 条
[1]   Transient parameter analysis of fluidized dense phase conveying [J].
Behera, Niranjana ;
Agarwal, Vijay K. ;
Jones, Mark G. ;
Williams, Kenneth C. .
POWDER TECHNOLOGY, 2012, 217 :261-268
[2]   GAS TURBULENCE MODULATION IN THE PNEUMATIC CONVEYING OF MASSIVE PARTICLES IN VERTICAL TUBES [J].
BOLIO, EJ ;
SINCLAIR, JL .
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 1995, 21 (06) :985-1001
[3]   PRESSURE-FLUCTUATIONS IN PNEUMATIC CONVEYING SYSTEMS [J].
DHODAPKAR, SV ;
KLINZING, GE .
POWDER TECHNOLOGY, 1993, 74 (02) :179-195
[4]   Analysis of unstable behavior of pneumatic conveying systems [J].
Jama, GA ;
Klinzing, GE ;
Rizk, F .
PARTICULATE SCIENCE AND TECHNOLOGY, 1999, 17 (1-2) :43-68
[5]   On the effect of particles on carrier phase turbulence in gas-particle flows [J].
Kenning, VM ;
Crowe, CT .
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 1997, 23 (02) :403-408
[6]  
LI H, 1997, P 2 INT C MAT HANDL
[7]   Analysis of gas-solids feeding and slug formation in low-velocity pneumatic conveying [J].
Li, J ;
Pandiella, SS ;
Webb, C ;
Dyakowski, T ;
Jones, MG .
PARTICULATE SCIENCE AND TECHNOLOGY, 2003, 21 (01) :57-73
[8]   STATISTICAL-ANALYSIS OF THE TRANSITION OF THE FLOW PATTERN IN VERTICAL PNEUMATIC CONVEYING [J].
MATSUMOTO, S ;
HARAKAWA, H .
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 1987, 13 (01) :123-129
[9]  
PAHK JB, 2006, P CHOPS 05
[10]   Energy dissipation rate and pressure fluctuations in a three phase fluidized bed with a large column diameter [J].
Park, SH .
KOREAN JOURNAL OF CHEMICAL ENGINEERING, 2004, 21 (05) :1066-1071