Numerical simulation of gas-particle flow with a second-order moment method in bubbling fluidized beds

作者: Sun Dan , Wang Jianzhi , Lu Huilin , Zhao Yunhua , Chen Juhui

DOI: 10.1016/J.POWTEC.2010.01.008

关键词: Jet (fluid)Fluidized bedBarbotageMechanicsReynolds stressFluidizationTwo-fluid modelChemistryVertical directionThermodynamicsTwo-phase flow

摘要: Abstract Flow behavior of gas and particles is performed by means gas–solid two-fluid model with the second-order moment in bubbling fluidized bed. The distributions velocity moments are predicted beds. Predictions compared experimental data measured Jung et al. (2005) a bed Patil experiments jet. simulated vertical direction on average 1.5–2.3 times larger than that lateral (Jung al., 2005). For jet, ratio normal to range 0.5–2.5 (Patil bubblelike Reynolds stresses per unit bulk density used Gidaspow (2002) computed from hydrodynamic velocities. 4.5–6.0 predictions agreement porosity (2005).

参考文章(59)
Dimitri Gidaspow, Jonghwun Jung, Raj K. Singh, Hydrodynamics of fluidization using kinetic theory: an emerging paradigm: 2002 Flour-Daniel lecture Powder Technology. ,vol. 148, pp. 123- 141 ,(2004) , 10.1016/J.POWTEC.2004.09.025
S. Ergun, Fluid flow through packed columns Chem. Eng. Prog.. ,vol. 48, pp. 89- 94 ,(1952)
T. G. Cowling, Sydney Chapman, David Park, The mathematical theory of non-uniform gases ,(1939)
D.J. Holland, C.R. Müller, J.S. Dennis, L.F. Gladden, A.J. Sederman, Spatially resolved measurement of anisotropic granular temperature in gas-fluidized beds Powder Technology. ,vol. 182, pp. 171- 181 ,(2008) , 10.1016/J.POWTEC.2007.06.030
L Xie, M. J Biggs, D Glass, A. S McLeod, S. U Egelhaaf, G Petekidis, Granular temperature distribution in a gas fluidized bed of hollow microparticles prior to onset of bubbling EPL. ,vol. 74, pp. 268- 274 ,(2006) , 10.1209/EPL/I2005-10526-Y
C. K. K. Lun, S. B. Savage, D. J. Jeffrey, N. Chepurniy, Kinetic theories for granular flow: inelastic particles in Couette flow and slightly inelastic particles in a general flowfield Journal of Fluid Mechanics. ,vol. 140, pp. 223- 256 ,(1984) , 10.1017/S0022112084000586
Jin Sun, Francine Battaglia, Hydrodynamic modeling of particle rotation for segregation in bubbling gas-fluidized beds Chemical Engineering Science. ,vol. 61, pp. 1470- 1479 ,(2006) , 10.1016/J.CES.2005.09.003
N. Reuge, L. Cadoret, C. Coufort-Saudejaud, S. Pannala, M. Syamlal, B. Caussat, Multifluid Eulerian modeling of dense gas–solids fluidized bed hydrodynamics: Influence of the dissipation parameters Chemical Engineering Science. ,vol. 63, pp. 5540- 5551 ,(2008) , 10.1016/J.CES.2008.07.028
Jonghwun Jung, Dimitri Gidaspow, Isaac K. Gamwo, BUBBLE COMPUTATION, GRANULAR TEMPERATURES, AND REYNOLDS STRESSES Chemical Engineering Communications. ,vol. 193, pp. 946- 975 ,(2006) , 10.1080/00986440500351982