Drag models for Simulation Gas-Solid Flow in the Bubbling Fluidized Bed of FCC Particles
In the current work, a numerical parametric study was
performed in order to model the fluid mechanics in the riser of a
bubbling fluidized bed (BFB). The gas-solid flow was simulated by
mean of a multi-fluid Eulerian model incorporating the kinetic theory
for solid particles. The bubbling fluidized bed was simulated two
dimensionally by mean of a Computational Fluid Dynamic (CFD)
commercial software package, Fluent. The effects of using different
inter-phase drag function (the drag model of Gidaspow, Syamlal and
O-Brien and the EMMS drag model) on the model predictions were
evaluated and compared. The results showed that the drag models of
Gidaspow and Syamlal and O-Brien overestimated the drag force for
the FCC particles and predicted a greater bed expansion in
comparison to the EMMS drag model.
[1] Sinclair JL, Jackson R,"Gas-particle flow in a vertical pipe with particleparticle
interactions," AIChE J., vol.35, pp.1473-1496,1989.
[2] J. Ding, D. Gidaspow, "A bubbling model using kinetic theory of
granular flow," AIChE J.,vol. 36 ,pp.523-538, 1990.
[3] D. Gidaspow, "Multiphase Flow Fluidization: Continuum Kinetic
Theory Description,"in Academic Press, Boston, 1994.
[4] Benyahia, S., Arastoopour, H., Knowlton, T., Massah, and H.,
"Simulation of particles and gas flow behavior in the riser section of a
circulatingfluidized bed using the kinetic theory approach for the
particulate phase," Powder Technology J., vol.112 pp.24-33. 2000.
[5] Pain, C., Mansoorzadeh, S., Oliveira, C. R. E. D. and Goddard, A. J. H.,
"Numerical Modeling of Gas-Solid Fluidized Beds Using the Two-Fluid
Approach," International Journal for Numerical Methods in Fluids,
vol.36, pp.91-124, 2001.
[6] Taghipour F, Ellis N, and Wong C, "Experimental and Computational
Study of Gas-Solid Fluidized Bed hydrodynamics," Chemical
Engineering Science J., vol. 60, no.24, pp.6857-6867, 2005.
[7] Johansson, K., van Wachem, B.G.M., Almstedt, A.E., "Experimental
validation of CFD models for fluidized beds: Influence of particle stress
models, gas phase compressibility and air in flow models," Chemical
Engineering ScienceJ.,vol. 61,pp.1705-1717.2006.
[8] Ehsan Esmaili, Nader Mahinpey, "Adjustment of drag coefficient
correlations in three dimensional CFD simulation of gas-solid bubbling
fluidized bed," Advances in Engineering Software J., vol.42, pp.375-
386.2011.
[9] Zimmermann, S. and F. Taghipour, "CFD Modeling of the
Hydrodynamics and Reaction Kinetics of FCC Fluidized Bed Reactors,"
Ind Eng Chem J., vol.44, pp.9818-9827. 2005.
[10] Farshid Vejahati, Nader Mahinpey, Naoko Ellis and Mehrdokht B.
Nikoo, "CFD Simulation of Gas-Solid Bubbling Fluidized Bed: A New
Method for Adjusting Drag Law," Can. J. Chem. Eng, vol. 87, pp.19-30,
2009.
[11] Benjapon Chalermsinsuwana, Dimitri Gidaspowc, and Pornpote
Piumsomboon, "Two- and three-dimensional CFD modeling of Geldart
A particles in a thin bubbling fluidized bed: Comparison of turbulence
and dispersion coefficients," Chemical Engineering J., vol.171, pp.301-
313.2011.
[12] N. Yang, W. Wang, W. Ge, J. Li, "CFD simulation of concurrent-up
gas-solid flow in circulating fluidized beds with structure-dependent
drag coefficient," Chem.Eng J., vol. 96, pp.71-80. 2003.
[13] Tingwen Li, John Grace, and Xiaotao Bi, "Study of wall boundary
condition in numerical simulations of bubbling fluidized beds," Powder
Technology J., vol.203, pp, 447-457.2010.
[14] Syamlal, M., and O-Brien, T. J., "Computer simulation of bubbles in a
fluidized bed," AIChE Symposium Series,vol. 85, pp.22-31. 1989.
[15] Wen, C. Y., & Yu, Y. H. "Mechanics of fluidization,Chemical,"
Engineering Progress Symposium Series, vol.62,pp.100-111. 1966.
[16] Ergun S.,"Fluid flow through packed columns," Chem Eng Progr vol.48,
pp.89-94. 1952.
[17] O-Brien TJ, Syamlal M, "Particle cluster effects in the numerical
simulation of a circulating fluidized bed," In Preprint Volume for CFBIV.
Avidan AA, ed. AIChE; New York, pp.430-435. 1993.
[18] Lun, C. K. K., S. B. Savage, D. J. Jeffrey and N. Chepurniy,"Kinetic
Theories for Granular Flow: Inelastic Particles in Couette Flow and
Slightly Inelastic Particles in a General Flow Field," Fluid Mech.J
vol.140, pp.223-256. 1984.
[19] Schaeffer D. G., "Instability in the Evolution Equations Describing
Incompressible Granular Flow," Journal of Differential Equations,
Vol.66, no.1, pp.19-50. 1987.
[20] McKeen, T., & Pugsley, T." Simulation and experimental validation of
a freely bubbling bed of FCC catalyst," Powder Technology,vol.129,pp.
139-152. 2003.
[21] Peng Li, Xingying Lan, Chunming Xu, GangWang, Chunxi Lu, Jinsen
Gao, "Drag models for simulating gas-solid flow in the turbulent
fluidization of FCC particles," Particuology.J, vol.7, pp.269-277.2009.
[1] Sinclair JL, Jackson R,"Gas-particle flow in a vertical pipe with particleparticle
interactions," AIChE J., vol.35, pp.1473-1496,1989.
[2] J. Ding, D. Gidaspow, "A bubbling model using kinetic theory of
granular flow," AIChE J.,vol. 36 ,pp.523-538, 1990.
[3] D. Gidaspow, "Multiphase Flow Fluidization: Continuum Kinetic
Theory Description,"in Academic Press, Boston, 1994.
[4] Benyahia, S., Arastoopour, H., Knowlton, T., Massah, and H.,
"Simulation of particles and gas flow behavior in the riser section of a
circulatingfluidized bed using the kinetic theory approach for the
particulate phase," Powder Technology J., vol.112 pp.24-33. 2000.
[5] Pain, C., Mansoorzadeh, S., Oliveira, C. R. E. D. and Goddard, A. J. H.,
"Numerical Modeling of Gas-Solid Fluidized Beds Using the Two-Fluid
Approach," International Journal for Numerical Methods in Fluids,
vol.36, pp.91-124, 2001.
[6] Taghipour F, Ellis N, and Wong C, "Experimental and Computational
Study of Gas-Solid Fluidized Bed hydrodynamics," Chemical
Engineering Science J., vol. 60, no.24, pp.6857-6867, 2005.
[7] Johansson, K., van Wachem, B.G.M., Almstedt, A.E., "Experimental
validation of CFD models for fluidized beds: Influence of particle stress
models, gas phase compressibility and air in flow models," Chemical
Engineering ScienceJ.,vol. 61,pp.1705-1717.2006.
[8] Ehsan Esmaili, Nader Mahinpey, "Adjustment of drag coefficient
correlations in three dimensional CFD simulation of gas-solid bubbling
fluidized bed," Advances in Engineering Software J., vol.42, pp.375-
386.2011.
[9] Zimmermann, S. and F. Taghipour, "CFD Modeling of the
Hydrodynamics and Reaction Kinetics of FCC Fluidized Bed Reactors,"
Ind Eng Chem J., vol.44, pp.9818-9827. 2005.
[10] Farshid Vejahati, Nader Mahinpey, Naoko Ellis and Mehrdokht B.
Nikoo, "CFD Simulation of Gas-Solid Bubbling Fluidized Bed: A New
Method for Adjusting Drag Law," Can. J. Chem. Eng, vol. 87, pp.19-30,
2009.
[11] Benjapon Chalermsinsuwana, Dimitri Gidaspowc, and Pornpote
Piumsomboon, "Two- and three-dimensional CFD modeling of Geldart
A particles in a thin bubbling fluidized bed: Comparison of turbulence
and dispersion coefficients," Chemical Engineering J., vol.171, pp.301-
313.2011.
[12] N. Yang, W. Wang, W. Ge, J. Li, "CFD simulation of concurrent-up
gas-solid flow in circulating fluidized beds with structure-dependent
drag coefficient," Chem.Eng J., vol. 96, pp.71-80. 2003.
[13] Tingwen Li, John Grace, and Xiaotao Bi, "Study of wall boundary
condition in numerical simulations of bubbling fluidized beds," Powder
Technology J., vol.203, pp, 447-457.2010.
[14] Syamlal, M., and O-Brien, T. J., "Computer simulation of bubbles in a
fluidized bed," AIChE Symposium Series,vol. 85, pp.22-31. 1989.
[15] Wen, C. Y., & Yu, Y. H. "Mechanics of fluidization,Chemical,"
Engineering Progress Symposium Series, vol.62,pp.100-111. 1966.
[16] Ergun S.,"Fluid flow through packed columns," Chem Eng Progr vol.48,
pp.89-94. 1952.
[17] O-Brien TJ, Syamlal M, "Particle cluster effects in the numerical
simulation of a circulating fluidized bed," In Preprint Volume for CFBIV.
Avidan AA, ed. AIChE; New York, pp.430-435. 1993.
[18] Lun, C. K. K., S. B. Savage, D. J. Jeffrey and N. Chepurniy,"Kinetic
Theories for Granular Flow: Inelastic Particles in Couette Flow and
Slightly Inelastic Particles in a General Flow Field," Fluid Mech.J
vol.140, pp.223-256. 1984.
[19] Schaeffer D. G., "Instability in the Evolution Equations Describing
Incompressible Granular Flow," Journal of Differential Equations,
Vol.66, no.1, pp.19-50. 1987.
[20] McKeen, T., & Pugsley, T." Simulation and experimental validation of
a freely bubbling bed of FCC catalyst," Powder Technology,vol.129,pp.
139-152. 2003.
[21] Peng Li, Xingying Lan, Chunming Xu, GangWang, Chunxi Lu, Jinsen
Gao, "Drag models for simulating gas-solid flow in the turbulent
fluidization of FCC particles," Particuology.J, vol.7, pp.269-277.2009.
@article{"International Journal of Chemical, Materials and Biomolecular Sciences:61741", author = "S. Benzarti and H. Mhiri and H. Bournot", title = "Drag models for Simulation Gas-Solid Flow in the Bubbling Fluidized Bed of FCC Particles", abstract = "In the current work, a numerical parametric study was
performed in order to model the fluid mechanics in the riser of a
bubbling fluidized bed (BFB). The gas-solid flow was simulated by
mean of a multi-fluid Eulerian model incorporating the kinetic theory
for solid particles. The bubbling fluidized bed was simulated two
dimensionally by mean of a Computational Fluid Dynamic (CFD)
commercial software package, Fluent. The effects of using different
inter-phase drag function (the drag model of Gidaspow, Syamlal and
O-Brien and the EMMS drag model) on the model predictions were
evaluated and compared. The results showed that the drag models of
Gidaspow and Syamlal and O-Brien overestimated the drag force for
the FCC particles and predicted a greater bed expansion in
comparison to the EMMS drag model.", keywords = "Bubbling fluidized bed, CFD, drag model, EMMS", volume = "6", number = "1", pages = "116-6", }
