# [1]钟文琪,熊源泉,袁竹林,等.喷动流化床气固流动特性的三维数值模拟[J].东南大学学报(自然科学版),2005,35(5):746-751.[doi:10.3969/j.issn.1001-0505.2005.05.020] 　Zhong Wenqi,Xiong Yuanquan,Yuan Zhulin,et al.Three-dimensional numerical simulation of gas-solid flow behavior in spout-fluid bed[J].Journal of Southeast University (Natural Science Edition),2005,35(5):746-751.[doi:10.3969/j.issn.1001-0505.2005.05.020] 点击复制 喷动流化床气固流动特性的三维数值模拟() 分享到： var jiathis_config = { data_track_clickback: true };

35

2005年第5期

746-751

2005-09-20

## 文章信息/Info

Title:
Three-dimensional numerical simulation of gas-solid flow behavior in spout-fluid bed

Author(s):
Key Laboratory of Clean Coal Power Generation and Combustion Technology of Ministry of Education, Southeast University, Nanjing 210096, China

Keywords:

TK222
DOI:
10.3969/j.issn.1001-0505.2005.05.020

Abstract:
Numerical simulation of gas-solid flow behaviors in a spout-fluid bed coal gasifier was carried out three dimensionally by discrete element method(DEM). Eulerian method and Lagrangian method were employed to deal with the gas phase and solid phase respectively. Shear lift force, Magnus lift force as well as drag force, contract force and gravitational force acting on individual particle were considered when establishing the mathematic models. The collision of particles was modeled by soft-sphere model. The flow patterns, forces acting on particles, particle mean velocities, gas turbulent intensities and particle turbulent intensities under the typical operating conditions were obtained. The results show that the ratio of collision between particles increases with the increase of spouting gas velocity but decreases with the increase of particle size, while the ratio of collision between particles and wall is found no variation with spouting gas velocity and particle size. Gravitational force, drag force and contact force dominate the particle motion, while shear lift force and Magnus lift acting on the particles are negligible when the particles are not in the boundary of the spout region. The gas turbulent intensity is always two or three times stronger than the particle turbulent intensity, while they are both smaller near the wall.

## 参考文献/References:

[1] Zhong W Q,Zhang M Y.Jet penetration depth in a two-dimensional spout-fluid bed [J]. Chemical Engineering Science,2005,60(2):315-327.
[2] 钟文琪,章名耀.基于ARM功率谱分析的喷动流化床压力波动频率特性[J].东南大学学报(自然科学版),2004,34(4):446-450.
Zhong Wenqi,Zhang Mingyao.Pressure fluctuation frequency characteristics in spout-fluid bed based on ARM power spectrum analysis [J]. Journal of Southeast University(Natural Science Edition),2004,34(4):446-450.(in Chinese)
[3] 钟文琪,章名耀.喷动流化床射流穿透深度试验研究[J].东南大学学报(自然科学版),2005,35(1):29-34.
Zhong Wenqi,Zhang Mingyao.Experimental investigation on jet penetration depth in spout-fluid bed [J].Journal of Southeast University(Natural Science Edition),2005,35(1):29-34.(in Chinese)
[4] Yuan Z L.Direct numerical simulation of dense gas-solid two-phase flows [J].Developments in Chemical Engineering and Mineral Processing, 2000,8(2):207-217.
[5] Kawaguchi T,Sakamoto M,Tanaka T,et al.Quasi-three-dimensional numerical simulation of spouted beds in cylinder [J]. Powder Technology, 2000,109(1):3-12.
[6] Zhou H,Flamant G,Gauthier D.DEM-LES of coal combustion in a bubbling fluidized bed part 1:gas-solid turbulent flow structure [J].Chemical Engineering Science, 2004,59(8):4193-4213.
[7] Tsuji Y,Kawaguchi T,Tanaka T.Discrete particle simulation of two-dimensional fluidized bed [J]. Powder Technology,1993,77(1):79-87.
[8] Tsuji Y.Activities in discrete particle simulation in Japan [J].Powder Technology, 2001,13(3):278-286.
[9] 熊源泉,袁竹林,章名耀.加压条件下气固喷射器输送特性的三维数值模拟[J].化工学报,2004,55(10):1638-1643.
Xiong Yuanquan,Yuan Zhulin,Zhang Mingyao.Three dimensional numerical simulation on conveying properties of gas solid injector under pressurization [J].Journal of Chemical Industry and Engineering,2004,55(10):1638-1643.(in Chinese)
[10] Elghobashi S.On predicting particle-laden turbulent flow [J].Applied Scientific Research, 1994,52(2):309-329.
[11] Cundall P D,Strack O D L.A discrete numerical model for granular assemblies [J].Geotechnique,1979,29(1):47-65.
[12] Mei R.An approximate expression for the shear lift force on a spherical particle at finite Reynolds number [J]. International Journal of Multiphase Flow, 1992,18(1):145-147.
[13] Lun C K,Liu H S.Numerical simulation of dilute turbulent gas-solid flows in horizontal channels [J]. International Journal of Multiphase Flow,1997,23(4):575-605.
[14] Pianarosa D L,Freitas L,Lim C J,et al.Voidage and particle velocity profiles in a spout-fluid bed [J].The Canadian Journal of Chemical Engineering,2000,78(2):132-142.

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