Color-PTV measurement and CFD-DEM simulation of the dynamics of poly-disperse particle systems in a pseudo-2D fluidized bed

被引:46
作者
Jiang, Zhaochen [1 ]
Hagemeier, Thomas [2 ]
Bueck, Andreas [1 ,3 ]
Tsotsas, Evangelos [1 ]
机构
[1] Otto von Guericke Univ, Thermal Proc Engn, NaWiTec, Univ Pl 2, D-39106 Magdeburg, Germany
[2] Otto von Guericke Univ, Lab Fluid Dynam & Tech Flows, Univ Pl 2, D-39106 Magdeburg, Germany
[3] FAU Erlangen Nuremberg, Inst Particle Technol LFG, Cauerstr 4, D-91058 Erlangen, Germany
关键词
Color-PTV; Granular temperature; Size dispersity; Mixing; CFD-DEM; Fluidized bed; DIGITAL IMAGE-ANALYSIS; SPRAY GRANULATION; COLLISION DYNAMICS; FLOW; SEGREGATION; VELOCIMETRY; MODEL; BEHAVIOR; FORCE; REGIMES;
D O I
10.1016/j.ces.2018.01.013
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
In a pseudo-2D fluidized bed, a new color particle tracking velocimetry (PTV) method, integrating the Voronoi tracking algorithm and the relaxation probability tracking algorithm, is proposed to measure velocities of individual particles with different sizes marked by distinguishable colors. Thorough verification of the color-PTV methodology is conducted based on synthetic images generated from CFD-DEM simulation data, in terms of segmentation bias, segmentation ratio, recovery ratio and error ratio. The novel color-PTV methodology shows very good performance in simultaneously tracking a large number of different individual particles in poly-disperse systems. Experimental results are used to compare with CFD-DEM simulations using different drag models. Simulations with correction for the effect of particle size dispersity in the drag model show significantly better agreement with respect to the mixing index, time-averaged volumetric particle flux, distributions of individual particle velocity as well as distributions of particle granular temperature. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码:115 / 132
页数:18
相关论文
共 57 条
[1]   Assessment of rolling resistance models in discrete element simulations [J].
Ai, Jun ;
Chen, Jian-Fei ;
Rotter, J. Michael ;
Ooi, Jin Y. .
POWDER TECHNOLOGY, 2011, 206 (03) :269-282
[2]  
[Anonymous], 2011, PRODUCT QUALITY FORM
[3]   Experimental investigation and correlation of the Bodenstein number in horizontal fluidized beds with internal baffles [J].
Bachmann, P. ;
Bueck, A. ;
Tsotsas, E. .
POWDER TECHNOLOGY, 2017, 308 :378-387
[4]   A new two-frame particle tracking algorithm using match probability [J].
Baek, SJ ;
Lee, SJ .
EXPERIMENTS IN FLUIDS, 1996, 22 (01) :23-32
[5]   Multi-scale modeling of granulation processes: Bi-directional coupling of PBM with DEM via collision frequencies [J].
Barrasso, Dana ;
Ramachandran, Rohit .
CHEMICAL ENGINEERING RESEARCH & DESIGN, 2015, 93 :304-317
[6]   Drag force of intermediate Reynolds number flow past mono- and bidisperse arrays of spheres [J].
Beetstra, R. ;
van der Hoef, M. A. ;
Kuipers, J. A. M. .
AICHE JOURNAL, 2007, 53 (02) :489-501
[7]   Numerical study of segregation using a new drag force correlation for polydisperse systems derived from lattice-Boltzmann simulations [J].
Beetstra, R. ;
van der Hoef, M. A. ;
Kuipers, J. A. M. .
CHEMICAL ENGINEERING SCIENCE, 2007, 62 (1-2) :246-255
[8]   Mixing and segregation in a bidisperse gas-solid fluidised bed: a numerical and experimental study [J].
Bokkers, GA ;
Annaland, MVS ;
Kuipers, JAM .
POWDER TECHNOLOGY, 2004, 140 (03) :176-186
[9]   Effective particle diameters for simulating fluidization of non-spherical particles: CFD-DEM models vs. MRI measurements [J].
Boyce, C. M. ;
Ozel, A. ;
Rice, N. P. ;
Rubinstein, G. J. ;
Holland, D. J. ;
Sundaresan, S. .
AICHE JOURNAL, 2017, 63 (07) :2555-2568
[10]   Model-based control of particle properties in fluidised bed spray granulation [J].
Bueck, Andreas ;
Palis, Stefan ;
Tsotsas, Evangelos .
POWDER TECHNOLOGY, 2015, 270 :575-583