Abstract
Two-phase (solid and gas) 2D fluidized bed reactor’s flow pattern was investigated. Computational fluid dynamics (CFD) simulation results were compared with those obtained experimentally. The CFD simulation is carried out using commercial software “Fluent”. Experiment is carried out in a fluidized bed containing spherical glass beads of diameter 300–350 μm. Initial volume fraction is fixed as 0.6. A multi-fluid Eulerian model incorporating the kinetic theory for solid particles was applied in order to simulate the gas–solid flow. Momentum exchange coefficients are calculated using Syamlal–O’Brien drag function. The kinetic energy lost during inter-particle collisions were characterized by specifying the restitution coefficient values from 0.9 to 0.99. The pressure drop and bed expansion ratio for various superficial velocities are compared with experimental results.
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References
Delloumea V, Lecknera B, Peiranoa E (2001) Two- or three-dimensional simulation of turbulent gas-solid flows applied to fluidization. Chem Eng Sci 56:4787–4799
Gamwo IK, Lyczkowski RW, Soong Y (1998) Numerical simulation and experimental validation of solids flows in a bubbling fluidized bed. Powder Technol 103:117–129
FLUENT 6.0 User's Guide, 20.4 Eulerian Model, Fluent Inc. (2001)
Pain CC, Mansoorzadeh S, De Oliveira CRE (2001) A study of bubbling and slugging fluidised beds using the two-fluid granular temperature model. Int J Multiph Flow 27:527–551
Gidaspow D (1994) Multiphase flow and fluidization. Continuum and kinetic theory descriptions. Academic, San Diego
Hrenya CM, Sinclair JL (1997) Effects of particle-phase turbulence in gas-solid flows. AIChE J 43(4):853–869
Benyahia S, Arastoopour H, Knowlton TM, Massah H (2000) Simulation of particles and gas flow behaviour in the riser section of a circulating fluidized bed using the kinetic theory approach for the particulate phase. Powder Tech 112:24–33
Syamlal M, O'Brien TJ (1989) Computer simulation of bubbles in a fluidized bed. AIChE Symp Series 85:22–31
Wen C-Y, Yu YH (1966) Mechanics of fluidization. Chem Eng Prog Symp Ser 62:100–111
Jenkins JT, Savage SB (1983) A theory for the rapid flow of identical, smooth, nearly elastic, spherical particles. J Fluid Mech 130:187–202
Kunii D, Levenspiel O (1991) Fluidization engineering, 2nd edn. Butterworth-Heinemann, UK, p 70
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Muthu Kumar, M., Natarajan, E. CFD simulation for two-phase mixing in 2D fluidized bed. Int J Adv Manuf Technol (2009). https://doi.org/10.1007/s00170-008-1875-9
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DOI: https://doi.org/10.1007/s00170-008-1875-9